20921350080192 has 56 divisors (see below), whose sum is σ = 58610546924976. Its totient is φ = 6563560808448.

The previous prime is 20921350080097. The next prime is 20921350080271. The reversal of 20921350080192 is 29108005312902.

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, 3204860413 + ... + 3204866940.

Almost surely, 2^{20921350080192} is an apocalyptic number.

It is an amenable number.

20921350080192 is an abundant number, since it is smaller than the sum of its proper divisors (37689196844784).

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

20921350080192 is a wasteful number, since it uses less digits than its factorization.

20921350080192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6409727385 (or 6409727375 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 42.

The spelling of 20921350080192 in words is "twenty trillion, nine hundred twenty-one billion, three hundred fifty million, eighty thousand, one hundred ninety-two".