21441762120912 has 80 divisors (see below), whose sum is σ = 63332102855040. Its totient is φ = 6123522318336.

The previous prime is 21441762120887. The next prime is 21441762120929. The reversal of 21441762120912 is 21902126714412.

It is a Harshad number since it is a multiple of its sum of digits (42).

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, 13273837 + ... + 14801292.

It is an arithmetic number, because the mean of its divisors is an integer number (791651285688).

Almost surely, 2^{21441762120912} is an apocalyptic number.

It is an amenable number.

21441762120912 is an abundant number, since it is smaller than the sum of its proper divisors (41890340734128).

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

21441762120912 is a wasteful number, since it uses less digits than its factorization.

21441762120912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28077420 (or 28077414 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 42.

The spelling of 21441762120912 in words is "twenty-one trillion, four hundred forty-one billion, seven hundred sixty-two million, one hundred twenty thousand, nine hundred twelve".