158660440972390 has 96 divisors (see below), whose sum is σ = 337322866003200. Its totient is φ = 53562294523584.

The previous prime is 158660440972381. The next prime is 158660440972441. The reversal of 158660440972390 is 93279044066851.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 73359711 + ... + 75491509.

It is an arithmetic number, because the mean of its divisors is an integer number (3513779854200).

It is a 1-persistent number, because it is pandigital, but 2⋅158660440972390 = 317320881944780 is not.

Almost surely, 2^{158660440972390} is an apocalyptic number.

158660440972390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

158660440972390 is an abundant number, since it is smaller than the sum of its proper divisors (178662425030810).

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

158660440972390 is a wasteful number, since it uses less digits than its factorization.

158660440972390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2134154 (or 2134147 counting only the distinct ones).

The product of its (nonzero) digits is 78382080, while the sum is 64.

The spelling of 158660440972390 in words is "one hundred fifty-eight trillion, six hundred sixty billion, four hundred forty million, nine hundred seventy-two thousand, three hundred ninety".