21613474763250 has 64 divisors (see below), whose sum is σ = 54059858611200. Its totient is φ = 5751560620800.

The previous prime is 21613474763249. The next prime is 21613474763299. The reversal of 21613474763250 is 5236747431612.

It is a junction number, because it is equal to n+sod(n) for n = 21613474763193 and 21613474763202.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29722135 + ... + 30440634.

It is an arithmetic number, because the mean of its divisors is an integer number (844685290800).

Almost surely, 2^{21613474763250} is an apocalyptic number.

21613474763250 is an abundant number, since it is smaller than the sum of its proper divisors (32446383847950).

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

21613474763250 is a wasteful number, since it uses less digits than its factorization.

21613474763250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60163268 (or 60163258 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 51.

The spelling of 21613474763250 in words is "twenty-one trillion, six hundred thirteen billion, four hundred seventy-four million, seven hundred sixty-three thousand, two hundred fifty".