21246774796384 has 48 divisors (see below), whose sum is σ = 43658309076480. Its totient is φ = 10168727895040.

The previous prime is 21246774796339. The next prime is 21246774796391. The reversal of 21246774796384 is 48369747764212.

It is a congruent number.

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, 152705824 + ... + 152844895.

It is an arithmetic number, because the mean of its divisors is an integer number (909548105760).

Almost surely, 2^{21246774796384} is an apocalyptic number.

It is an amenable number.

21246774796384 is an abundant number, since it is smaller than the sum of its proper divisors (22411534280096).

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

21246774796384 is a wasteful number, since it uses less digits than its factorization.

21246774796384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305550823 (or 305550815 counting only the distinct ones).

The product of its digits is 682795008, while the sum is 70.

The spelling of 21246774796384 in words is "twenty-one trillion, two hundred forty-six billion, seven hundred seventy-four million, seven hundred ninety-six thousand, three hundred eighty-four".