21304542610 has 64 divisors (see below), whose sum is σ = 42711266304. Its totient is φ = 7598073600.

The previous prime is 21304542601. The next prime is 21304542643. The reversal of 21304542610 is 1624540312.

It is a super-2 number, since 2×21304542610² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2239965 + ... + 2249455.

It is an arithmetic number, because the mean of its divisors is an integer number (667363536).

Almost surely, 2^21304542610 is an apocalyptic number.

21304542610 is an abundant number, since it is smaller than the sum of its proper divisors (21406723694).

21304542610 is a wasteful number, since it uses less digits than its factorization.

21304542610 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10099.

The product of its (nonzero) digits is 5760, while the sum is 28.

The spelling of 21304542610 in words is "twenty-one billion, three hundred four million, five hundred forty-two thousand, six hundred ten".