20453392512 has 512 divisors, whose sum is σ = 74891174400. Its totient is φ = 5361500160.

The previous prime is 20453392501. The next prime is 20453392543. The reversal of 20453392512 is 21529335402.

20453392512 is a `hidden beast` number, since 2 + 0 + 4 + 53 + 3 + 92 + 512 = 666.

It is a super-5 number, since 5×20453392512⁵ (a number of 53 digits) contains 55555 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 16861218 + ... + 16862430.

It is an arithmetic number, because the mean of its divisors is an integer number (146271825).

Almost surely, 2^20453392512 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 20453392512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37445587200).

20453392512 is an abundant number, since it is smaller than the sum of its proper divisors (54437781888).

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

20453392512 is a wasteful number, since it uses less digits than its factorization.

20453392512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1301 (or 1283 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The spelling of 20453392512 in words is "twenty billion, four hundred fifty-three million, three hundred ninety-two thousand, five hundred twelve".