56906955684457 has 2 divisors, whose sum is σ = 56906955684458. Its totient is φ = 56906955684456.

The previous prime is 56906955684419. The next prime is 56906955684571. The reversal of 56906955684457 is 75448655960965.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46439168407641 + 10467787276816 = 6814629^2 + 3235396^2 .

It is a cyclic number.

It is not a de Polignac number, because 56906955684457 - 2³¹ = 56904808200809 is a prime.

It is not a weakly prime, because it can be changed into another prime (56906955664457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28453477842228 + 28453477842229.

It is an arithmetic number, because the mean of its divisors is an integer number (28453477842229).

Almost surely, 2^{56906955684457} is an apocalyptic number.

It is an amenable number.

56906955684457 is a deficient number, since it is larger than the sum of its proper divisors (1).

56906955684457 is an equidigital number, since it uses as much as digits as its factorization.

56906955684457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9797760000, while the sum is 79.

The spelling of 56906955684457 in words is "fifty-six trillion, nine hundred six billion, nine hundred fifty-five million, six hundred eighty-four thousand, four hundred fifty-seven".