20449875732192 has 120 divisors (see below), whose sum is σ = 60167793985992. Its totient is φ = 6813760262400.

The previous prime is 20449875732191. The next prime is 20449875732277. The reversal of 20449875732192 is 29123757894402.

20449875732192 is a `hidden beast` number, since 2 + 0 + 4 + 49 + 8 + 7 + 573 + 2 + 19 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20449875732191) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4514767 + ... + 7828337.

Almost surely, 2^{20449875732192} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20449875732192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30083896992996).

20449875732192 is an abundant number, since it is smaller than the sum of its proper divisors (39717918253800).

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

20449875732192 is a wasteful number, since it uses less digits than its factorization.

20449875732192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3315974 (or 3315957 counting only the distinct ones).

The product of its (nonzero) digits is 60963840, while the sum is 63.

The spelling of 20449875732192 in words is "twenty trillion, four hundred forty-nine billion, eight hundred seventy-five million, seven hundred thirty-two thousand, one hundred ninety-two".