72075640188 has 12 divisors (see below), whose sum is σ = 168176493800. Its totient is φ = 24025213392.

The previous prime is 72075640157. The next prime is 72075640199. The reversal of 72075640188 is 88104657027.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3003151663 + ... + 3003151686.

Almost surely, 2^72075640188 is an apocalyptic number.

It is an amenable number.

72075640188 is an abundant number, since it is smaller than the sum of its proper divisors (96100853612).

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

72075640188 is a wasteful number, since it uses less digits than its factorization.

72075640188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6006303356 (or 6006303354 counting only the distinct ones).

The product of its (nonzero) digits is 752640, while the sum is 48.

The spelling of 72075640188 in words is "seventy-two billion, seventy-five million, six hundred forty thousand, one hundred eighty-eight".