56697543955 has 8 divisors (see below), whose sum is σ = 73270672272. Its totient is φ = 41868955488.

The previous prime is 56697543953. The next prime is 56697544003. The reversal of 56697543955 is 55934579665.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 56697543955 - 2¹ = 56697543953 is a prime.

It is a super-2 number, since 2×56697543955² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56697543953) 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, 436134889 + ... + 436135018.

It is an arithmetic number, because the mean of its divisors is an integer number (9158834034).

Almost surely, 2^56697543955 is an apocalyptic number.

56697543955 is a deficient number, since it is larger than the sum of its proper divisors (16573128317).

56697543955 is a wasteful number, since it uses less digits than its factorization.

56697543955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 872269925.

The product of its digits is 153090000, while the sum is 64.

The spelling of 56697543955 in words is "fifty-six billion, six hundred ninety-seven million, five hundred forty-three thousand, nine hundred fifty-five".