66872272852 has 432 divisors, whose sum is σ = 170400706560. Its totient is φ = 22361961600.

The previous prime is 66872272807. The next prime is 66872272897. The reversal of 66872272852 is 25827227866.

It is an interprime number because it is at equal distance from previous prime (66872272807) and next prime (66872272897).

Its product of digits (9031680) is a multiple of the sum of its prime divisors (140).

It is a junction number, because it is equal to n+sod(n) for n = 66872272793 and 66872272802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 1422814293 + ... + 1422814339.

It is an arithmetic number, because the mean of its divisors is an integer number (394446080).

Almost surely, 2^66872272852 is an apocalyptic number.

66872272852 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66872272852, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85200353280).

66872272852 is an abundant number, since it is smaller than the sum of its proper divisors (103528433708).

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

66872272852 is a wasteful number, since it uses less digits than its factorization.

66872272852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184 (or 140 counting only the distinct ones).

The product of its digits is 9031680, while the sum is 55.

The spelling of 66872272852 in words is "sixty-six billion, eight hundred seventy-two million, two hundred seventy-two thousand, eight hundred fifty-two".