56174077681 has 2 divisors, whose sum is σ = 56174077682. Its totient is φ = 56174077680.

The previous prime is 56174077667. The next prime is 56174077723. The reversal of 56174077681 is 18677047165.

It is a happy number.

56174077681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49354621281 + 6819456400 = 222159^2 + 82580^2 .

It is a cyclic number.

It is not a de Polignac number, because 56174077681 - 2¹³ = 56174069489 is a prime.

It is a super-2 number, since 2×56174077681² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (56174077601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28087038840 + 28087038841.

It is an arithmetic number, because the mean of its divisors is an integer number (28087038841).

Almost surely, 2^56174077681 is an apocalyptic number.

It is an amenable number.

56174077681 is a deficient number, since it is larger than the sum of its proper divisors (1).

56174077681 is an equidigital number, since it uses as much as digits as its factorization.

56174077681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1975680, while the sum is 52.

The spelling of 56174077681 in words is "fifty-six billion, one hundred seventy-four million, seventy-seven thousand, six hundred eighty-one".