20988272409892 has 48 divisors (see below), whose sum is σ = 37066661049600. Its totient is φ = 10398235351680.

The previous prime is 20988272409869. The next prime is 20988272409959. The reversal of 20988272409892 is 29890427288902.

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, 1348939609 + ... + 1348955167.

It is an arithmetic number, because the mean of its divisors is an integer number (772222105200).

Almost surely, 2^{20988272409892} is an apocalyptic number.

It is an amenable number.

20988272409892 is a deficient number, since it is larger than the sum of its proper divisors (16078388639708).

20988272409892 is a wasteful number, since it uses less digits than its factorization.

20988272409892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22396 (or 22394 counting only the distinct ones).

The product of its (nonzero) digits is 167215104, while the sum is 70.

The spelling of 20988272409892 in words is "twenty trillion, nine hundred eighty-eight billion, two hundred seventy-two million, four hundred nine thousand, eight hundred ninety-two".