56340521566 has 16 divisors (see below), whose sum is σ = 96588716256. Its totient is φ = 24144696576.

The previous prime is 56340521557. The next prime is 56340521597. The reversal of 56340521566 is 66512504365.

It is a super-2 number, since 2×56340521566² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 211750 + ... + 396886.

It is an arithmetic number, because the mean of its divisors is an integer number (6036794766).

Almost surely, 2^56340521566 is an apocalyptic number.

56340521566 is a deficient number, since it is larger than the sum of its proper divisors (40248194690).

56340521566 is a wasteful number, since it uses less digits than its factorization.

56340521566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206883.

The product of its (nonzero) digits is 648000, while the sum is 43.

The spelling of 56340521566 in words is "fifty-six billion, three hundred forty million, five hundred twenty-one thousand, five hundred sixty-six".