55696869656 has 16 divisors (see below), whose sum is σ = 105182939400. Its totient is φ = 27648085824.

The previous prime is 55696869617. The next prime is 55696869671. The reversal of 55696869656 is 65696869655.

It is a self number, because there is not a number n which added to its sum of digits gives 55696869656.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25042445 + ... + 25044668.

Almost surely, 2^55696869656 is an apocalyptic number.

It is an amenable number.

55696869656 is a deficient number, since it is larger than the sum of its proper divisors (49486069744).

55696869656 is a wasteful number, since it uses less digits than its factorization.

55696869656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50087258 (or 50087254 counting only the distinct ones).

The product of its digits is 629856000, while the sum is 71.

Subtracting 55696869656 from its reverse (65696869655), we obtain a palindrome (9999999999).

The spelling of 55696869656 in words is "fifty-five billion, six hundred ninety-six million, eight hundred sixty-nine thousand, six hundred fifty-six".