21500157363370 has 16 divisors (see below), whose sum is σ = 44228895147648. Its totient is φ = 7371482524560.

The previous prime is 21500157363341. The next prime is 21500157363449. The reversal of 21500157363370 is 7336375100512.

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, 153572552526 + ... + 153572552665.

It is an arithmetic number, because the mean of its divisors is an integer number (2764305946728).

Almost surely, 2^{21500157363370} is an apocalyptic number.

21500157363370 is an abundant number, since it is smaller than the sum of its proper divisors (22728737784278).

21500157363370 is a wasteful number, since it uses less digits than its factorization.

21500157363370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307145105205.

The product of its (nonzero) digits is 396900, while the sum is 43.

The spelling of 21500157363370 in words is "twenty-one trillion, five hundred billion, one hundred fifty-seven million, three hundred sixty-three thousand, three hundred seventy".