56171853007 has 2 divisors, whose sum is σ = 56171853008. Its totient is φ = 56171853006.

The previous prime is 56171852987. The next prime is 56171853011. The reversal of 56171853007 is 70035817165.

56171853007 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56171853007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56171853607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28085926503 + 28085926504.

It is an arithmetic number, because the mean of its divisors is an integer number (28085926504).

Almost surely, 2^56171853007 is an apocalyptic number.

56171853007 is a deficient number, since it is larger than the sum of its proper divisors (1).

56171853007 is an equidigital number, since it uses as much as digits as its factorization.

56171853007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 176400, while the sum is 43.

The spelling of 56171853007 in words is "fifty-six billion, one hundred seventy-one million, eight hundred fifty-three thousand, seven".