157863932813 has 2 divisors, whose sum is σ = 157863932814. Its totient is φ = 157863932812.

The previous prime is 157863932761. The next prime is 157863932851. The reversal of 157863932813 is 318239368751.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 137965444969 + 19898487844 = 371437^2 + 141062^2 .

It is a cyclic number.

It is not a de Polignac number, because 157863932813 - 2¹⁴ = 157863916429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157863932873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78931966406 + 78931966407.

It is an arithmetic number, because the mean of its divisors is an integer number (78931966407).

Almost surely, 2^157863932813 is an apocalyptic number.

It is an amenable number.

157863932813 is a deficient number, since it is larger than the sum of its proper divisors (1).

157863932813 is an equidigital number, since it uses as much as digits as its factorization.

157863932813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6531840, while the sum is 56.

The spelling of 157863932813 in words is "one hundred fifty-seven billion, eight hundred sixty-three million, nine hundred thirty-two thousand, eight hundred thirteen".