56466211887 has 20 divisors (see below), whose sum is σ = 84412902816. Its totient is φ = 37616408640.

The previous prime is 56466211871. The next prime is 56466211897. The reversal of 56466211887 is 78811266465.

56466211887 is a `hidden beast` number, since 5 + 6 + 4 + 6 + 621 + 1 + 8 + 8 + 7 = 666.

It is not a de Polignac number, because 56466211887 - 2⁴ = 56466211871 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56466211817) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 145863 + ... + 366344.

Almost surely, 2^56466211887 is an apocalyptic number.

56466211887 is a deficient number, since it is larger than the sum of its proper divisors (27946690929).

56466211887 is a wasteful number, since it uses less digits than its factorization.

56466211887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513580 (or 513571 counting only the distinct ones).

The product of its digits is 3870720, while the sum is 54.

The spelling of 56466211887 in words is "fifty-six billion, four hundred sixty-six million, two hundred eleven thousand, eight hundred eighty-seven".