21948694242684 has 48 divisors (see below), whose sum is σ = 55871173806336. Its totient is φ = 6650908720000.

The previous prime is 21948694242641. The next prime is 21948694242703. The reversal of 21948694242684 is 48624249684912.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1572664 + ... + 6809600.

It is an arithmetic number, because the mean of its divisors is an integer number (1163982787632).

Almost surely, 2^{21948694242684} is an apocalyptic number.

It is an amenable number.

21948694242684 is an abundant number, since it is smaller than the sum of its proper divisors (33922479563652).

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

21948694242684 is a wasteful number, since it uses less digits than its factorization.

21948694242684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5268706 (or 5268704 counting only the distinct ones).

The product of its digits is 382205952, while the sum is 69.

The spelling of 21948694242684 in words is "twenty-one trillion, nine hundred forty-eight billion, six hundred ninety-four million, two hundred forty-two thousand, six hundred eighty-four".