72390133134 has 64 divisors (see below), whose sum is σ = 178368226560. Its totient is φ = 21576780000.

The previous prime is 72390133099. The next prime is 72390133237. The reversal of 72390133134 is 43133109327.

It is a happy number.

72390133134 is a `hidden beast` number, since 7 + 2 + 390 + 133 + 134 = 666.

It is a Curzon number.

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, 962692 + ... + 1035159.

It is an arithmetic number, because the mean of its divisors is an integer number (2787003540).

Almost surely, 2^72390133134 is an apocalyptic number.

72390133134 is an abundant number, since it is smaller than the sum of its proper divisors (105978093426).

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

72390133134 is a wasteful number, since it uses less digits than its factorization.

72390133134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1997934 (or 1997928 counting only the distinct ones).

The product of its (nonzero) digits is 40824, while the sum is 36.

The spelling of 72390133134 in words is "seventy-two billion, three hundred ninety million, one hundred thirty-three thousand, one hundred thirty-four".