21715406789082 has 32 divisors (see below), whose sum is σ = 47571276542400. Its totient is φ = 6577756754688.

The previous prime is 21715406789059. The next prime is 21715406789123. The reversal of 21715406789082 is 28098760451712.

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, 3670620232 + ... + 3670626147.

It is an arithmetic number, because the mean of its divisors is an integer number (1486602391950).

Almost surely, 2^{21715406789082} is an apocalyptic number.

21715406789082 is an abundant number, since it is smaller than the sum of its proper divisors (25855869753318).

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

21715406789082 is a wasteful number, since it uses less digits than its factorization.

21715406789082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7341246430.

The product of its (nonzero) digits is 13547520, while the sum is 60.

The spelling of 21715406789082 in words is "twenty-one trillion, seven hundred fifteen billion, four hundred six million, seven hundred eighty-nine thousand, eighty-two".