21310715514 has 32 divisors (see below), whose sum is σ = 48943272960. Its totient is φ = 6117908400.

The previous prime is 21310715501. The next prime is 21310715519. The reversal of 21310715514 is 41551701312.

It is not an unprimeable number, because it can be changed into a prime (21310715519) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8495842 + ... + 8498349.

It is an arithmetic number, because the mean of its divisors is an integer number (1529477280).

Almost surely, 2^21310715514 is an apocalyptic number.

21310715514 is an abundant number, since it is smaller than the sum of its proper divisors (27632557446).

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

21310715514 is a wasteful number, since it uses less digits than its factorization.

21310715514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16994226.

The product of its (nonzero) digits is 4200, while the sum is 30.

The spelling of 21310715514 in words is "twenty-one billion, three hundred ten million, seven hundred fifteen thousand, five hundred fourteen".