56264626640 has 40 divisors (see below), whose sum is σ = 138510275400. Its totient is φ = 21181976576.

The previous prime is 56264626529. The next prime is 56264626643. The reversal of 56264626640 is 4662646265.

It can be written as a sum of positive squares in 4 ways, for example, as 4167477136 + 52097149504 = 64556^2 + 228248^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56264626643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20684165 + ... + 20686884.

It is an arithmetic number, because the mean of its divisors is an integer number (3462756885).

Almost surely, 2^56264626640 is an apocalyptic number.

It is an amenable number.

56264626640 is an abundant number, since it is smaller than the sum of its proper divisors (82245648760).

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

56264626640 is a wasteful number, since it uses less digits than its factorization.

56264626640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41371079 (or 41371073 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 47.

The spelling of 56264626640 in words is "fifty-six billion, two hundred sixty-four million, six hundred twenty-six thousand, six hundred forty".