72239186880 has 336 divisors, whose sum is σ = 296452686240. Its totient is φ = 16511717376.

The previous prime is 72239186879. The next prime is 72239186893. The reversal of 72239186880 is 8868193227.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (336).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 338044 + ... + 508676.

Almost surely, 2^72239186880 is an apocalyptic number.

72239186880 is a gapful number since it is divisible by the number (70) 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 72239186880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (148226343120).

72239186880 is an abundant number, since it is smaller than the sum of its proper divisors (224213499360).

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

72239186880 is a wasteful number, since it uses less digits than its factorization.

72239186880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170673 (or 170650 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 54.

The spelling of 72239186880 in words is "seventy-two billion, two hundred thirty-nine million, one hundred eighty-six thousand, eight hundred eighty".