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69000810496 = 21239742433
BaseRepresentation
bin100000001000011000…
…1001101000000000000
320121002210012100112221
41000100301031000000
52112303201413441
651410514500424
74661622132502
oct1002061150000
9217083170487
1069000810496
1127299182222
1211458294714
136678432367
1434a8039d72
151bdca3e8d1
hex1010c4d000

69000810496 has 52 divisors (see below), whose sum is σ = 138335603812. Its totient is φ = 34412691456.

The previous prime is 69000810491. The next prime is 69000810511. The reversal of 69000810496 is 69401800096.

It can be written as a sum of positive squares in 2 ways, for example, as 42865561600 + 26135248896 = 207040^2 + 161664^2 .

It is a super-2 number, since 2×690008104962 (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69000810491) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1604896 + ... + 1647328.

Almost surely, 269000810496 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 69000810496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69167801906).

69000810496 is an abundant number, since it is smaller than the sum of its proper divisors (69334793316).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

69000810496 is an equidigital number, since it uses as much as digits as its factorization.

69000810496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42854 (or 42832 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 43.

The spelling of 69000810496 in words is "sixty-nine billion, eight hundred ten thousand, four hundred ninety-six".

Divisors: 1 2 4 8 16 32 64 128 256 397 512 794 1024 1588 2048 3176 4096 6352 12704 25408 42433 50816 84866 101632 169732 203264 339464 406528 678928 813056 1357856 1626112 2715712 5431424 10862848 16845901 21725696 33691802 43451392 67383604 86902784 134767208 173805568 269534416 539068832 1078137664 2156275328 4312550656 8625101312 17250202624 34500405248 69000810496