21650352610 has 16 divisors (see below), whose sum is σ = 39203994816. Its totient is φ = 8608283248.

The previous prime is 21650352583. The next prime is 21650352641. The reversal of 21650352610 is 1625305612.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6480472 + ... + 6483811.

It is an arithmetic number, because the mean of its divisors is an integer number (2450249676).

Almost surely, 2^21650352610 is an apocalyptic number.

21650352610 is a deficient number, since it is larger than the sum of its proper divisors (17553642206).

21650352610 is a wasteful number, since it uses less digits than its factorization.

21650352610 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12964457.

The product of its (nonzero) digits is 10800, while the sum is 31.

The spelling of 21650352610 in words is "twenty-one billion, six hundred fifty million, three hundred fifty-two thousand, six hundred ten".