21010514315 has 16 divisors (see below), whose sum is σ = 29069419968. Its totient is φ = 14279709696.

The previous prime is 21010514243. The next prime is 21010514339. The reversal of 21010514315 is 51341501012.

It is not a de Polignac number, because 21010514315 - 2²⁰ = 21009465739 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2652242 + ... + 2660151.

It is an arithmetic number, because the mean of its divisors is an integer number (1816838748).

Almost surely, 2^21010514315 is an apocalyptic number.

21010514315 is a deficient number, since it is larger than the sum of its proper divisors (8058905653).

21010514315 is a wasteful number, since it uses less digits than its factorization.

21010514315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5312518.

The product of its (nonzero) digits is 600, while the sum is 23.

The spelling of 21010514315 in words is "twenty-one billion, ten million, five hundred fourteen thousand, three hundred fifteen".