20187552792 has 32 divisors (see below), whose sum is σ = 55056962880. Its totient is φ = 6117440160.

The previous prime is 20187552757. The next prime is 20187552793. The reversal of 20187552792 is 29725578102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20187552793) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38233738 + ... + 38234265.

It is an arithmetic number, because the mean of its divisors is an integer number (1720530090).

Almost surely, 2^20187552792 is an apocalyptic number.

20187552792 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20187552792 is an abundant number, since it is smaller than the sum of its proper divisors (34869410088).

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

20187552792 is a wasteful number, since it uses less digits than its factorization.

20187552792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76468023 (or 76468019 counting only the distinct ones).

The product of its (nonzero) digits is 705600, while the sum is 48.

The spelling of 20187552792 in words is "twenty billion, one hundred eighty-seven million, five hundred fifty-two thousand, seven hundred ninety-two".