56431166534 has 16 divisors (see below), whose sum is σ = 85366966608. Its totient is φ = 27976489632.

The previous prime is 56431166527. The next prime is 56431166537. The reversal of 56431166534 is 43566113465.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56431166537) 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, 128972 + ... + 359855.

It is an arithmetic number, because the mean of its divisors is an integer number (5335435413).

Almost surely, 2^56431166534 is an apocalyptic number.

56431166534 is a deficient number, since it is larger than the sum of its proper divisors (28935800074).

56431166534 is a wasteful number, since it uses less digits than its factorization.

56431166534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 489319.

The product of its digits is 777600, while the sum is 44.

Adding to 56431166534 its reverse (43566113465), we get a palindrome (99997279999).

The spelling of 56431166534 in words is "fifty-six billion, four hundred thirty-one million, one hundred sixty-six thousand, five hundred thirty-four".