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68674093488 = 2433741113463
BaseRepresentation
bin111111111101010010…
…111000000110110000
320120021000102102002000
4333331102320012300
52111121031442423
651314244054000
74650544110000
oct777522700660
9216230372060
1068674093488
112714080a970
1211386994300
13662583b9a0
1434768b0000
151bbe004843
hexffd4b81b0

68674093488 has 800 divisors, whose sum is σ = 270746004480. Its totient is φ = 16429754880.

The previous prime is 68674093483. The next prime is 68674093513. The reversal of 68674093488 is 88439047686.

68674093488 is a `hidden beast` number, since 6 + 8 + 67 + 4 + 0 + 93 + 488 = 666.

It is a super-2 number, since 2×686740934882 (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (68674093483) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 148323945 + ... + 148324407.

Almost surely, 268674093488 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 68674093488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (135373002240).

68674093488 is an abundant number, since it is smaller than the sum of its proper divisors (202071910992).

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

68674093488 is a wasteful number, since it uses less digits than its factorization.

68674093488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532 (or 499 counting only the distinct ones).

The product of its (nonzero) digits is 55738368, while the sum is 63.

The spelling of 68674093488 in words is "sixty-eight billion, six hundred seventy-four million, ninety-three thousand, four hundred eighty-eight".