56980056491 has 2 divisors, whose sum is σ = 56980056492. Its totient is φ = 56980056490.

The previous prime is 56980056451. The next prime is 56980056521. The reversal of 56980056491 is 19465008965.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56980056491 is a prime.

It is not a weakly prime, because it can be changed into another prime (56980056421) 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, 28490028245 + 28490028246.

It is an arithmetic number, because the mean of its divisors is an integer number (28490028246).

Almost surely, 2^56980056491 is an apocalyptic number.

56980056491 is a deficient number, since it is larger than the sum of its proper divisors (1).

56980056491 is an equidigital number, since it uses as much as digits as its factorization.

56980056491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2332800, while the sum is 53.

The spelling of 56980056491 in words is "fifty-six billion, nine hundred eighty million, fifty-six thousand, four hundred ninety-one".