21004710700 has 18 divisors (see below), whose sum is σ = 45580222436. Its totient is φ = 8401884240.

The previous prime is 21004710679. The next prime is 21004710751. The reversal of 21004710700 is 701740012.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 105023454 + ... + 105023653.

Almost surely, 2^21004710700 is an apocalyptic number.

21004710700 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21004710700 is an abundant number, since it is smaller than the sum of its proper divisors (24575511736).

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

21004710700 is a wasteful number, since it uses less digits than its factorization.

21004710700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210047121 (or 210047114 counting only the distinct ones).

The product of its (nonzero) digits is 392, while the sum is 22.

The spelling of 21004710700 in words is "twenty-one billion, four million, seven hundred ten thousand, seven hundred".