56315171807 has 2 divisors, whose sum is σ = 56315171808. Its totient is φ = 56315171806.

The previous prime is 56315171791. The next prime is 56315171821. The reversal of 56315171807 is 70817151365.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56315171807 - 2⁴ = 56315171791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56315171867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28157585903 + 28157585904.

It is an arithmetic number, because the mean of its divisors is an integer number (28157585904).

Almost surely, 2^56315171807 is an apocalyptic number.

56315171807 is a deficient number, since it is larger than the sum of its proper divisors (1).

56315171807 is an equidigital number, since it uses as much as digits as its factorization.

56315171807 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 176400, while the sum is 44.

The spelling of 56315171807 in words is "fifty-six billion, three hundred fifteen million, one hundred seventy-one thousand, eight hundred seven".