20454437112 has 64 divisors (see below), whose sum is σ = 54013301760. Its totient is φ = 6444748800.

The previous prime is 20454437039. The next prime is 20454437131. The reversal of 20454437112 is 21173445402.

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, 287689 + ... + 351672.

It is an arithmetic number, because the mean of its divisors is an integer number (843957840).

Almost surely, 2^20454437112 is an apocalyptic number.

It is an amenable number.

20454437112 is an abundant number, since it is smaller than the sum of its proper divisors (33558864648).

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

20454437112 is a wasteful number, since it uses less digits than its factorization.

20454437112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 639444 (or 639440 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 33.

The spelling of 20454437112 in words is "twenty billion, four hundred fifty-four million, four hundred thirty-seven thousand, one hundred twelve".