56666500057475 has 24 divisors (see below), whose sum is σ = 87604937234688. Its totient is φ = 35324571463200.

The previous prime is 56666500057471. The next prime is 56666500057477. The reversal of 56666500057475 is 57475000566665.

It is not a de Polignac number, because 56666500057475 - 2² = 56666500057471 is a prime.

It is a super-2 number, since 2×56666500057475² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56666500057471) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14718569519 + ... + 14718573368.

It is an arithmetic number, because the mean of its divisors is an integer number (3650205718112).

Almost surely, 2^{56666500057475} is an apocalyptic number.

56666500057475 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

56666500057475 is a deficient number, since it is larger than the sum of its proper divisors (30938437177213).

56666500057475 is a wasteful number, since it uses less digits than its factorization.

56666500057475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29437142915 (or 29437142910 counting only the distinct ones).

The product of its (nonzero) digits is 158760000, while the sum is 62.

The spelling of 56666500057475 in words is "fifty-six trillion, six hundred sixty-six billion, five hundred million, fifty-seven thousand, four hundred seventy-five".