56066881965 has 16 divisors (see below), whose sum is σ = 91227470400. Its totient is φ = 29395517312.

The previous prime is 56066881951. The next prime is 56066881987. The reversal of 56066881965 is 56918866065.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 56066881965 - 2¹¹ = 56066879917 is a prime.

It is a super-2 number, since 2×56066881965² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 56066881899 and 56066881908.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31675320 + ... + 31677089.

It is an arithmetic number, because the mean of its divisors is an integer number (5701716900).

Almost surely, 2^56066881965 is an apocalyptic number.

It is an amenable number.

56066881965 is a deficient number, since it is larger than the sum of its proper divisors (35160588435).

56066881965 is a wasteful number, since it uses less digits than its factorization.

56066881965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63352476.

The product of its (nonzero) digits is 18662400, while the sum is 60.

The spelling of 56066881965 in words is "fifty-six billion, sixty-six million, eight hundred eighty-one thousand, nine hundred sixty-five".