56371866514551 has 96 divisors (see below), whose sum is σ = 101400638976000. Its totient is φ = 30098436701760.

The previous prime is 56371866514547. The next prime is 56371866514571. The reversal of 56371866514551 is 15541566817365.

56371866514551 is a `hidden beast` number, since 5 + 6 + 3 + 7 + 1 + 8 + 6 + 65 + 14 + 551 = 666.

It is not a de Polignac number, because 56371866514551 - 2² = 56371866514547 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56371866514571) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 7381101 + ... + 12931526.

It is an arithmetic number, because the mean of its divisors is an integer number (1056256656000).

Almost surely, 2^{56371866514551} is an apocalyptic number.

56371866514551 is a deficient number, since it is larger than the sum of its proper divisors (45028772461449).

56371866514551 is a wasteful number, since it uses less digits than its factorization.

56371866514551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20312714 (or 20312697 counting only the distinct ones).

The product of its digits is 90720000, while the sum is 63.

The spelling of 56371866514551 in words is "fifty-six trillion, three hundred seventy-one billion, eight hundred sixty-six million, five hundred fourteen thousand, five hundred fifty-one".