72399470168 has 8 divisors (see below), whose sum is σ = 135749006580. Its totient is φ = 36199735080.

The previous prime is 72399470147. The next prime is 72399470201. The reversal of 72399470168 is 86107499327.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4524966878 + ... + 4524966893.

Almost surely, 2^72399470168 is an apocalyptic number.

It is an amenable number.

72399470168 is a deficient number, since it is larger than the sum of its proper divisors (63349536412).

72399470168 is a wasteful number, since it uses less digits than its factorization.

72399470168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9049933777 (or 9049933773 counting only the distinct ones).

The product of its (nonzero) digits is 4572288, while the sum is 56.

The spelling of 72399470168 in words is "seventy-two billion, three hundred ninety-nine million, four hundred seventy thousand, one hundred sixty-eight".