21602474645650 has 48 divisors (see below), whose sum is σ = 40794855087168. Its totient is φ = 8509819608000.

The previous prime is 21602474645639. The next prime is 21602474645659. The reversal of 21602474645650 is 5654647420612.

It is not an unprimeable number, because it can be changed into a prime (21602474645659) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10655296 + ... + 12519595.

It is an arithmetic number, because the mean of its divisors is an integer number (849892814316).

Almost surely, 2^{21602474645650} is an apocalyptic number.

21602474645650 is a deficient number, since it is larger than the sum of its proper divisors (19192380441518).

21602474645650 is a wasteful number, since it uses less digits than its factorization.

21602474645650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23175187 (or 23175182 counting only the distinct ones).

The product of its (nonzero) digits is 9676800, while the sum is 52.

The spelling of 21602474645650 in words is "twenty-one trillion, six hundred two billion, four hundred seventy-four million, six hundred forty-five thousand, six hundred fifty".