158515697431 has 16 divisors (see below), whose sum is σ = 196264502784. Its totient is φ = 124667989344.

The previous prime is 158515697423. The next prime is 158515697441. The reversal of 158515697431 is 134796515851.

It is a cyclic number.

It is not a de Polignac number, because 158515697431 - 2³ = 158515697423 is a prime.

It is a super-2 number, since 2×158515697431² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158515697441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5200165 + ... + 5230558.

It is an arithmetic number, because the mean of its divisors is an integer number (12266531424).

Almost surely, 2^158515697431 is an apocalyptic number.

158515697431 is a deficient number, since it is larger than the sum of its proper divisors (37748805353).

158515697431 is a wasteful number, since it uses less digits than its factorization.

158515697431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10430910.

The product of its digits is 4536000, while the sum is 55.

The spelling of 158515697431 in words is "one hundred fifty-eight billion, five hundred fifteen million, six hundred ninety-seven thousand, four hundred thirty-one".