158158160685 has 60 divisors (see below), whose sum is σ = 329801049468. Its totient is φ = 72300864384.

The previous prime is 158158160639. The next prime is 158158160707. The reversal of 158158160685 is 586061851851.

158158160685 is a `hidden beast` number, since 1 + 58 + 1 + 581 + 6 + 0 + 6 + 8 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 19950432516 + 138207728169 = 141246^2 + 371763^2 .

It is not a de Polignac number, because 158158160685 - 2¹⁹ = 158157636397 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 3964992 + ... + 4004681.

Almost surely, 2^158158160685 is an apocalyptic number.

158158160685 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

158158160685 is an abundant number, since it is smaller than the sum of its proper divisors (171642888783).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

158158160685 is an equidigital number, since it uses as much as digits as its factorization.

158158160685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7969704 (or 7969688 counting only the distinct ones).

The product of its (nonzero) digits is 2304000, while the sum is 54.

The spelling of 158158160685 in words is "one hundred fifty-eight billion, one hundred fifty-eight million, one hundred sixty thousand, six hundred eighty-five".