21949131000184 has 64 divisors (see below), whose sum is σ = 44758704211200. Its totient is φ = 10052249839104.

The previous prime is 21949131000107. The next prime is 21949131000193. The reversal of 21949131000184 is 48100013194912.

It is a self number, because there is not a number n which added to its sum of digits gives 21949131000184.

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, 13754644 + ... + 15267235.

It is an arithmetic number, because the mean of its divisors is an integer number (699354753300).

Almost surely, 2^{21949131000184} is an apocalyptic number.

It is an amenable number.

21949131000184 is an abundant number, since it is smaller than the sum of its proper divisors (22809573211016).

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

21949131000184 is a wasteful number, since it uses less digits than its factorization.

21949131000184 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29022052 (or 29022048 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 43.

The spelling of 21949131000184 in words is "twenty-one trillion, nine hundred forty-nine billion, one hundred thirty-one million, one hundred eighty-four", and thus it is an aban number.