154315138615520 has 48 divisors (see below), whose sum is σ = 365741764341408. Its totient is φ = 61527579363840.

The previous prime is 154315138615501. The next prime is 154315138615579. The reversal of 154315138615520 is 25516831513451.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1550544479 + ... + 1550643998.

It is an arithmetic number, because the mean of its divisors is an integer number (7619620090446).

Almost surely, 2^{154315138615520} is an apocalyptic number.

154315138615520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

154315138615520 is an abundant number, since it is smaller than the sum of its proper divisors (211426625725888).

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

154315138615520 is a wasteful number, since it uses less digits than its factorization.

154315138615520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3101188803 (or 3101188795 counting only the distinct ones).

The product of its (nonzero) digits is 2160000, while the sum is 50.

The spelling of 154315138615520 in words is "one hundred fifty-four trillion, three hundred fifteen billion, one hundred thirty-eight million, six hundred fifteen thousand, five hundred twenty".