21613360536736 has 48 divisors (see below), whose sum is σ = 43607548774944. Its totient is φ = 10539197270784.

The previous prime is 21613360536707. The next prime is 21613360536751. The reversal of 21613360536736 is 63763506331612.

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, 11128566 + ... + 12925621.

It is an arithmetic number, because the mean of its divisors is an integer number (908490599478).

Almost surely, 2^{21613360536736} is an apocalyptic number.

It is an amenable number.

21613360536736 is an abundant number, since it is smaller than the sum of its proper divisors (21994188238208).

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

21613360536736 is a wasteful number, since it uses less digits than its factorization.

21613360536736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24054893 (or 24054885 counting only the distinct ones).

The product of its (nonzero) digits is 7348320, while the sum is 52.

The spelling of 21613360536736 in words is "twenty-one trillion, six hundred thirteen billion, three hundred sixty million, five hundred thirty-six thousand, seven hundred thirty-six".