64372180272 has 160 divisors (see below), whose sum is σ = 181533381120. Its totient is φ = 19585566720.

The previous prime is 64372180241. The next prime is 64372180289. The reversal of 64372180272 is 27208127346.

It is a happy number.

64372180272 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3466372 + ... + 3484892.

It is an arithmetic number, because the mean of its divisors is an integer number (1134583632).

Almost surely, 2^64372180272 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 64372180272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90766690560).

64372180272 is an abundant number, since it is smaller than the sum of its proper divisors (117161200848).

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

64372180272 is a wasteful number, since it uses less digits than its factorization.

64372180272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18691 (or 18685 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 42.

The spelling of 64372180272 in words is "sixty-four billion, three hundred seventy-two million, one hundred eighty thousand, two hundred seventy-two".