72372856043 has 16 divisors (see below), whose sum is σ = 75707654400. Its totient is φ = 69136450080.

The previous prime is 72372856037. The next prime is 72372856121. The reversal of 72372856043 is 34065827327.

It is a cyclic number.

It is not a de Polignac number, because 72372856043 - 2²⁰ = 72371807467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72372856033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 177578 + ... + 419856.

It is an arithmetic number, because the mean of its divisors is an integer number (4731728400).

Almost surely, 2^72372856043 is an apocalyptic number.

72372856043 is a deficient number, since it is larger than the sum of its proper divisors (3334798357).

72372856043 is a wasteful number, since it uses less digits than its factorization.

72372856043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242482.

The product of its (nonzero) digits is 1693440, while the sum is 47.

The spelling of 72372856043 in words is "seventy-two billion, three hundred seventy-two million, eight hundred fifty-six thousand, forty-three".