72436862399 has 4 divisors (see below), whose sum is σ = 79022031720. Its totient is φ = 65851693080.

The previous prime is 72436862383. The next prime is 72436862431. The reversal of 72436862399 is 99326863427.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 72436862399 - 2⁴ = 72436862383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72436862899) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3292584644 + ... + 3292584665.

It is an arithmetic number, because the mean of its divisors is an integer number (19755507930).

Almost surely, 2^72436862399 is an apocalyptic number.

72436862399 is a deficient number, since it is larger than the sum of its proper divisors (6585169321).

72436862399 is a wasteful number, since it uses less digits than its factorization.

72436862399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6585169320.

The product of its digits is 23514624, while the sum is 59.

The spelling of 72436862399 in words is "seventy-two billion, four hundred thirty-six million, eight hundred sixty-two thousand, three hundred ninety-nine".