156856334413 has 2 divisors, whose sum is σ = 156856334414. Its totient is φ = 156856334412.

The previous prime is 156856334407. The next prime is 156856334419. The reversal of 156856334413 is 314433658651.

It is a balanced prime because it is at equal distance from previous prime (156856334407) and next prime (156856334419).

It can be written as a sum of positive squares in only one way, i.e., 128287897929 + 28568436484 = 358173^2 + 169022^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-156856334413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (156856334419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78428167206 + 78428167207.

It is an arithmetic number, because the mean of its divisors is an integer number (78428167207).

Almost surely, 2^156856334413 is an apocalyptic number.

It is an amenable number.

156856334413 is a deficient number, since it is larger than the sum of its proper divisors (1).

156856334413 is an equidigital number, since it uses as much as digits as its factorization.

156856334413 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3110400, while the sum is 49.

The spelling of 156856334413 in words is "one hundred fifty-six billion, eight hundred fifty-six million, three hundred thirty-four thousand, four hundred thirteen".