158579017040 has 20 divisors (see below), whose sum is σ = 368696214804. Its totient is φ = 63431606784.

The previous prime is 158579017027. The next prime is 158579017057. The reversal of 158579017040 is 40710975851.

It can be written as a sum of positive squares in 2 ways, for example, as 114769178176 + 43809838864 = 338776^2 + 209308^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×158579017040² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 991118777 + ... + 991118936.

Almost surely, 2^158579017040 is an apocalyptic number.

158579017040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

158579017040 is an abundant number, since it is smaller than the sum of its proper divisors (210117197764).

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

158579017040 is a wasteful number, since it uses less digits than its factorization.

158579017040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1982237726 (or 1982237720 counting only the distinct ones).

The product of its (nonzero) digits is 352800, while the sum is 47.

The spelling of 158579017040 in words is "one hundred fifty-eight billion, five hundred seventy-nine million, seventeen thousand, forty".