158672431397 has 2 divisors, whose sum is σ = 158672431398. Its totient is φ = 158672431396.

The previous prime is 158672431279. The next prime is 158672431409. The reversal of 158672431397 is 793134276851.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 81849776836 + 76822654561 = 286094^2 + 277169^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-158672431397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (158672433397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79336215698 + 79336215699.

It is an arithmetic number, because the mean of its divisors is an integer number (79336215699).

Almost surely, 2^158672431397 is an apocalyptic number.

It is an amenable number.

158672431397 is a deficient number, since it is larger than the sum of its proper divisors (1).

158672431397 is an equidigital number, since it uses as much as digits as its factorization.

158672431397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7620480, while the sum is 56.

The spelling of 158672431397 in words is "one hundred fifty-eight billion, six hundred seventy-two million, four hundred thirty-one thousand, three hundred ninety-seven".