72011920080 has 160 divisors (see below), whose sum is σ = 227812169088. Its totient is φ = 18812160000.

The previous prime is 72011920067. The next prime is 72011920091. The reversal of 72011920080 is 8002911027.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

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, 3664842 + ... + 3684438.

Almost surely, 2^72011920080 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 72011920080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113906084544).

72011920080 is an abundant number, since it is smaller than the sum of its proper divisors (155800249008).

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

72011920080 is a wasteful number, since it uses less digits than its factorization.

72011920080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19925 (or 19919 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 30.

The spelling of 72011920080 in words is "seventy-two billion, eleven million, nine hundred twenty thousand, eighty".