21089655350 has 12 divisors (see below), whose sum is σ = 39226759044. Its totient is φ = 8435862120.

The previous prime is 21089655347. The next prime is 21089655383. The reversal of 21089655350 is 5355698012.

It is a congruent number.

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, 210896504 + ... + 210896603.

It is an arithmetic number, because the mean of its divisors is an integer number (3268896587).

Almost surely, 2^21089655350 is an apocalyptic number.

21089655350 is a deficient number, since it is larger than the sum of its proper divisors (18137103694).

21089655350 is a wasteful number, since it uses less digits than its factorization.

21089655350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421793119 (or 421793114 counting only the distinct ones).

The product of its (nonzero) digits is 324000, while the sum is 44.

The spelling of 21089655350 in words is "twenty-one billion, eighty-nine million, six hundred fifty-five thousand, three hundred fifty".