20872061952 has 264 divisors, whose sum is σ = 65067677856. Its totient is φ = 5930975232.

The previous prime is 20872061939. The next prime is 20872061953. The reversal of 20872061952 is 25916027802.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (20872061953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47115043 + ... + 47115485.

Almost surely, 2^20872061952 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 20872061952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32533838928).

20872061952 is an abundant number, since it is smaller than the sum of its proper divisors (44195615904).

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

20872061952 is a wasteful number, since it uses less digits than its factorization.

20872061952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 793 (or 768 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 42.

The spelling of 20872061952 in words is "twenty billion, eight hundred seventy-two million, sixty-one thousand, nine hundred fifty-two".