72559704955 has 4 divisors (see below), whose sum is σ = 87071645952. Its totient is φ = 58047763960.

The previous prime is 72559704857. The next prime is 72559705027. The reversal of 72559704955 is 55940795527.

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

It is not a de Polignac number, because 72559704955 - 2¹⁷ = 72559573883 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 72559704955.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7255970491 + ... + 7255970500.

It is an arithmetic number, because the mean of its divisors is an integer number (21767911488).

Almost surely, 2^72559704955 is an apocalyptic number.

72559704955 is a deficient number, since it is larger than the sum of its proper divisors (14511940997).

72559704955 is a wasteful number, since it uses less digits than its factorization.

72559704955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14511940996.

The product of its (nonzero) digits is 19845000, while the sum is 58.

The spelling of 72559704955 in words is "seventy-two billion, five hundred fifty-nine million, seven hundred four thousand, nine hundred fifty-five".