157839417540 has 144 divisors (see below), whose sum is σ = 579363587712. Its totient is φ = 33955365888.

The previous prime is 157839417517. The next prime is 157839417599. The reversal of 157839417540 is 45714938751.

157839417540 is a `hidden beast` number, since 1 + 5 + 7 + 8 + 3 + 94 + 1 + 7 + 540 = 666.

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, 3662974 + ... + 3705813.

It is an arithmetic number, because the mean of its divisors is an integer number (4023358248).

Almost surely, 2^157839417540 is an apocalyptic number.

157839417540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

157839417540 is an abundant number, since it is smaller than the sum of its proper divisors (421524170172).

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

157839417540 is a wasteful number, since it uses less digits than its factorization.

157839417540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7368826 (or 7368821 counting only the distinct ones).

The product of its (nonzero) digits is 4233600, while the sum is 54.

The spelling of 157839417540 in words is "one hundred fifty-seven billion, eight hundred thirty-nine million, four hundred seventeen thousand, five hundred forty".