56616256233571 has 2 divisors, whose sum is σ = 56616256233572. Its totient is φ = 56616256233570.

The previous prime is 56616256233421. The next prime is 56616256233583. The reversal of 56616256233571 is 17533265261665.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56616256233571 - 2²⁹ = 56615719362659 is a prime.

It is a super-3 number, since 3×56616256233571³ (a number of 42 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (56616256237571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28308128116785 + 28308128116786.

It is an arithmetic number, because the mean of its divisors is an integer number (28308128116786).

Almost surely, 2^{56616256233571} is an apocalyptic number.

56616256233571 is a deficient number, since it is larger than the sum of its proper divisors (1).

56616256233571 is an equidigital number, since it uses as much as digits as its factorization.

56616256233571 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40824000, while the sum is 58.

The spelling of 56616256233571 in words is "fifty-six trillion, six hundred sixteen billion, two hundred fifty-six million, two hundred thirty-three thousand, five hundred seventy-one".