158636396740 has 12 divisors (see below), whose sum is σ = 333136433196. Its totient is φ = 63454558688.

The previous prime is 158636396669. The next prime is 158636396749. The reversal of 158636396740 is 47693636851.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 77168395264 + 81468001476 = 277792^2 + 285426^2 .

It is not an unprimeable number, because it can be changed into a prime (158636396749) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3965909899 + ... + 3965909938.

It is an arithmetic number, because the mean of its divisors is an integer number (27761369433).

Almost surely, 2^158636396740 is an apocalyptic number.

158636396740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

158636396740 is an abundant number, since it is smaller than the sum of its proper divisors (174500036456).

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

158636396740 is a wasteful number, since it uses less digits than its factorization.

158636396740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7931819846 (or 7931819844 counting only the distinct ones).

The product of its (nonzero) digits is 19595520, while the sum is 58.

The spelling of 158636396740 in words is "one hundred fifty-eight billion, six hundred thirty-six million, three hundred ninety-six thousand, seven hundred forty".