20238545173392 has 1440 divisors, whose sum is σ = 74271024921600. Its totient is φ = 5029923225600.

The previous prime is 20238545173391. The next prime is 20238545173439. The reversal of 20238545173392 is 29337154583202.

20238545173392 is a `hidden beast` number, since 2 + 0 + 2 + 3 + 8 + 5 + 4 + 517 + 33 + 92 = 666.

It is not an unprimeable number, because it can be changed into a prime (20238545173391) by changing a digit.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 72023292292 + ... + 72023292572.

It is an arithmetic number, because the mean of its divisors is an integer number (51577100640).

Almost surely, 2^{20238545173392} 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 20238545173392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37135512460800).

20238545173392 is an abundant number, since it is smaller than the sum of its proper divisors (54032479748208).

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

20238545173392 is a wasteful number, since it uses less digits than its factorization.

20238545173392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 657 (or 635 counting only the distinct ones).

The product of its (nonzero) digits is 10886400, while the sum is 54.

The spelling of 20238545173392 in words is "twenty trillion, two hundred thirty-eight billion, five hundred forty-five million, one hundred seventy-three thousand, three hundred ninety-two".