56863497461 has 2 divisors, whose sum is σ = 56863497462. Its totient is φ = 56863497460.

The previous prime is 56863497451. The next prime is 56863497479. The reversal of 56863497461 is 16479436865.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29918274961 + 26945222500 = 172969^2 + 164150^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56863497461 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 56863497461.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56863497401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28431748730 + 28431748731.

It is an arithmetic number, because the mean of its divisors is an integer number (28431748731).

Almost surely, 2^56863497461 is an apocalyptic number.

It is an amenable number.

56863497461 is a deficient number, since it is larger than the sum of its proper divisors (1).

56863497461 is an equidigital number, since it uses as much as digits as its factorization.

56863497461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26127360, while the sum is 59.

The spelling of 56863497461 in words is "fifty-six billion, eight hundred sixty-three million, four hundred ninety-seven thousand, four hundred sixty-one".