56513477047481 has 2 divisors, whose sum is σ = 56513477047482. Its totient is φ = 56513477047480.

The previous prime is 56513477047477. The next prime is 56513477047543. The reversal of 56513477047481 is 18474077431565.

It is a happy number.

It is an a-pointer prime, because the next prime (56513477047543) can be obtained adding 56513477047481 to its sum of digits (62).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38172428851456 + 18341048196025 = 6178384^2 + 4282645^2 .

It is a cyclic number.

It is not a de Polignac number, because 56513477047481 - 2² = 56513477047477 is a prime.

It is a super-2 number, since 2×56513477047481² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (56513477047451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28256738523740 + 28256738523741.

It is an arithmetic number, because the mean of its divisors is an integer number (28256738523741).

Almost surely, 2^{56513477047481} is an apocalyptic number.

It is an amenable number.

56513477047481 is a deficient number, since it is larger than the sum of its proper divisors (1).

56513477047481 is an equidigital number, since it uses as much as digits as its factorization.

56513477047481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 79027200, while the sum is 62.

The spelling of 56513477047481 in words is "fifty-six trillion, five hundred thirteen billion, four hundred seventy-seven million, forty-seven thousand, four hundred eighty-one".