56486913997 has 2 divisors, whose sum is σ = 56486913998. Its totient is φ = 56486913996.

The previous prime is 56486913991. The next prime is 56486914019. The reversal of 56486913997 is 79931968465.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56477997801 + 8916196 = 237651^2 + 2986^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56486913997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56486913991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28243456998 + 28243456999.

It is an arithmetic number, because the mean of its divisors is an integer number (28243456999).

Almost surely, 2^56486913997 is an apocalyptic number.

It is an amenable number.

56486913997 is a deficient number, since it is larger than the sum of its proper divisors (1).

56486913997 is an equidigital number, since it uses as much as digits as its factorization.

56486913997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 88179840, while the sum is 67.

The spelling of 56486913997 in words is "fifty-six billion, four hundred eighty-six million, nine hundred thirteen thousand, nine hundred ninety-seven".