72345179563 has 4 divisors (see below), whose sum is σ = 72346576608. Its totient is φ = 72343782520.

The previous prime is 72345179537. The next prime is 72345179587. The reversal of 72345179563 is 36597154327.

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 72345179563 - 2²⁹ = 71808308651 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 72345179563.

It is not an unprimeable number, because it can be changed into a prime (72345174563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 617731 + ... + 725452.

It is an arithmetic number, because the mean of its divisors is an integer number (18086644152).

Almost surely, 2^72345179563 is an apocalyptic number.

72345179563 is a deficient number, since it is larger than the sum of its proper divisors (1397045).

72345179563 is a wasteful number, since it uses less digits than its factorization.

72345179563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1397044.

The product of its digits is 4762800, while the sum is 52.

The spelling of 72345179563 in words is "seventy-two billion, three hundred forty-five million, one hundred seventy-nine thousand, five hundred sixty-three".