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263071345420 = 22513277831759
BaseRepresentation
bin1111010100000001000…
…1100010101100001100
3221011000220011000002201
43311000101202230030
513302232231023140
6320504151531244
725002103353352
oct3650021425414
9834026130081
10263071345420
11a1627a09564
1242b9a089b24
131ba66180900
14ca3882d7d2
156c9a66049a
hex3d40462b0c

263071345420 has 36 divisors (see below), whose sum is σ = 598214907360. Its totient is φ = 97134033984.

The previous prime is 263071345403. The next prime is 263071345429. The reversal of 263071345420 is 24543170362.

It is a self number, because there is not a number n which added to its sum of digits gives 263071345420.

It is not an unprimeable number, because it can be changed into a prime (263071345429) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38912500 + ... + 38919259.

It is an arithmetic number, because the mean of its divisors is an integer number (16617080760).

Almost surely, 2263071345420 is an apocalyptic number.

263071345420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

263071345420 is an abundant number, since it is smaller than the sum of its proper divisors (335143561940).

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

263071345420 is a wasteful number, since it uses less digits than its factorization.

263071345420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77831794 (or 77831779 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 37.

The spelling of 263071345420 in words is "two hundred sixty-three billion, seventy-one million, three hundred forty-five thousand, four hundred twenty".

Divisors: 1 2 4 5 10 13 20 26 52 65 130 169 260 338 676 845 1690 3380 77831759 155663518 311327036 389158795 778317590 1011812867 1556635180 2023625734 4047251468 5059064335 10118128670 13153567271 20236257340 26307134542 52614269084 65767836355 131535672710 263071345420