72314242817 has 4 divisors (see below), whose sum is σ = 73852843776. Its totient is φ = 70775641860.

The previous prime is 72314242807. The next prime is 72314242829. The reversal of 72314242817 is 71824241327.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72314242817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72314242807) 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, 769300409 + ... + 769300502.

It is an arithmetic number, because the mean of its divisors is an integer number (18463210944).

Almost surely, 2^72314242817 is an apocalyptic number.

It is an amenable number.

72314242817 is a deficient number, since it is larger than the sum of its proper divisors (1538600959).

72314242817 is a wasteful number, since it uses less digits than its factorization.

72314242817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1538600958.

The product of its digits is 150528, while the sum is 41.

The spelling of 72314242817 in words is "seventy-two billion, three hundred fourteen million, two hundred forty-two thousand, eight hundred seventeen".