72156032045 has 16 divisors (see below), whose sum is σ = 86916836160. Its totient is φ = 57505302144.

The previous prime is 72156032029. The next prime is 72156032071. The reversal of 72156032045 is 54023065127.

It is a cyclic number.

It is not a de Polignac number, because 72156032045 - 2⁴ = 72156032029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 72156031996 and 72156032014.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3025889 + ... + 3049641.

It is an arithmetic number, because the mean of its divisors is an integer number (5432302260).

Almost surely, 2^72156032045 is an apocalyptic number.

It is an amenable number.

72156032045 is a deficient number, since it is larger than the sum of its proper divisors (14760804115).

72156032045 is a wasteful number, since it uses less digits than its factorization.

72156032045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26044.

The product of its (nonzero) digits is 50400, while the sum is 35.

The spelling of 72156032045 in words is "seventy-two billion, one hundred fifty-six million, thirty-two thousand, forty-five".