56657864141 has 2 divisors, whose sum is σ = 56657864142. Its totient is φ = 56657864140.

The previous prime is 56657864117. The next prime is 56657864191. The reversal of 56657864141 is 14146875665.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49171288516 + 7486575625 = 221746^2 + 86525^2 .

It is a cyclic number.

It is not a de Polignac number, because 56657864141 - 2¹⁰ = 56657863117 is a prime.

It is a super-2 number, since 2×56657864141² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56657864101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28328932070 + 28328932071.

It is an arithmetic number, because the mean of its divisors is an integer number (28328932071).

Almost surely, 2^56657864141 is an apocalyptic number.

It is an amenable number.

56657864141 is a deficient number, since it is larger than the sum of its proper divisors (1).

56657864141 is an equidigital number, since it uses as much as digits as its factorization.

56657864141 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4838400, while the sum is 53.

The spelling of 56657864141 in words is "fifty-six billion, six hundred fifty-seven million, eight hundred sixty-four thousand, one hundred forty-one".