72323172495 has 48 divisors (see below), whose sum is σ = 143668062720. Its totient is φ = 32969875392.

The previous prime is 72323172451. The next prime is 72323172499. The reversal of 72323172495 is 59427132327.

72323172495 is a `hidden beast` number, since 72 + 3 + 23 + 1 + 72 + 495 = 666.

It is not a de Polignac number, because 72323172495 - 2¹⁴ = 72323156111 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 72323172495.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72323172499) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 206689 + ... + 432858.

It is an arithmetic number, because the mean of its divisors is an integer number (2993084640).

Almost surely, 2^72323172495 is an apocalyptic number.

72323172495 is a deficient number, since it is larger than the sum of its proper divisors (71344890225).

72323172495 is a wasteful number, since it uses less digits than its factorization.

72323172495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 639924 (or 639921 counting only the distinct ones).

The product of its digits is 635040, while the sum is 45.

The spelling of 72323172495 in words is "seventy-two billion, three hundred twenty-three million, one hundred seventy-two thousand, four hundred ninety-five".