72366591204 has 36 divisors (see below), whose sum is σ = 184812511884. Its totient is φ = 23873513472.

The previous prime is 72366591181. The next prime is 72366591217. The reversal of 72366591204 is 40219566327.

72366591204 is a `hidden beast` number, since 7 + 2 + 36 + 6 + 591 + 20 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 13783229604 + 58583361600 = 117402^2 + 242040^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a self number, because there is not a number n which added to its sum of digits gives 72366591204.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10358277 + ... + 10365260.

Almost surely, 2^72366591204 is an apocalyptic number.

It is an amenable number.

72366591204 is an abundant number, since it is smaller than the sum of its proper divisors (112445920680).

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

72366591204 is a wasteful number, since it uses less digits than its factorization.

72366591204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20723644 (or 20723639 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 45.

The spelling of 72366591204 in words is "seventy-two billion, three hundred sixty-six million, five hundred ninety-one thousand, two hundred four".