72417313867 has 4 divisors (see below), whose sum is σ = 72419016600. Its totient is φ = 72415611136.

The previous prime is 72417313799. The next prime is 72417313883. The reversal of 72417313867 is 76831371427.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 76831371427 = 701 ⋅109602527.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72417313867 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 72417313867.

It is not an unprimeable number, because it can be changed into a prime (72418313867) 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, 785893 + ... + 873190.

It is an arithmetic number, because the mean of its divisors is an integer number (18104754150).

Almost surely, 2^72417313867 is an apocalyptic number.

72417313867 is a deficient number, since it is larger than the sum of its proper divisors (1702733).

72417313867 is a wasteful number, since it uses less digits than its factorization.

72417313867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1702732.

The product of its digits is 1185408, while the sum is 49.

The spelling of 72417313867 in words is "seventy-two billion, four hundred seventeen million, three hundred thirteen thousand, eight hundred sixty-seven".