21905602010 has 32 divisors (see below), whose sum is σ = 40210473600. Its totient is φ = 8589651520.

The previous prime is 21905602007. The next prime is 21905602027. The reversal of 21905602010 is 1020650912.

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, 160100 + ... + 263520.

It is an arithmetic number, because the mean of its divisors is an integer number (1256577300).

Almost surely, 2^21905602010 is an apocalyptic number.

21905602010 is a deficient number, since it is larger than the sum of its proper divisors (18304871590).

21905602010 is a wasteful number, since it uses less digits than its factorization.

21905602010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103846.

The product of its (nonzero) digits is 1080, while the sum is 26.

The spelling of 21905602010 in words is "twenty-one billion, nine hundred five million, six hundred two thousand, ten".