56510156513 has 2 divisors, whose sum is σ = 56510156514. Its totient is φ = 56510156512.

The previous prime is 56510156477. The next prime is 56510156539. The reversal of 56510156513 is 31565101565.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41392716304 + 15117440209 = 203452^2 + 122953^2 .

It is a cyclic number.

It is not a de Polignac number, because 56510156513 - 2⁶ = 56510156449 is a prime.

It is not a weakly prime, because it can be changed into another prime (56510116513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28255078256 + 28255078257.

It is an arithmetic number, because the mean of its divisors is an integer number (28255078257).

Almost surely, 2^56510156513 is an apocalyptic number.

It is an amenable number.

56510156513 is a deficient number, since it is larger than the sum of its proper divisors (1).

56510156513 is an equidigital number, since it uses as much as digits as its factorization.

56510156513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 67500, while the sum is 38.

The spelling of 56510156513 in words is "fifty-six billion, five hundred ten million, one hundred fifty-six thousand, five hundred thirteen".