20873194752 has 72 divisors (see below), whose sum is σ = 55588738464. Its totient is φ = 6953273344.

The previous prime is 20873194733. The next prime is 20873194757. The reversal of 20873194752 is 25749137802.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20873194757) 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, 1323103 + ... + 1338785.

It is an arithmetic number, because the mean of its divisors is an integer number (772065812).

Almost surely, 2^20873194752 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 20873194752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27794369232).

20873194752 is an abundant number, since it is smaller than the sum of its proper divisors (34715543712).

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

20873194752 is a wasteful number, since it uses less digits than its factorization.

20873194752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17435 (or 17421 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 48.

The spelling of 20873194752 in words is "twenty billion, eight hundred seventy-three million, one hundred ninety-four thousand, seven hundred fifty-two".