72310467817 has 6 divisors (see below), whose sum is σ = 84116258538. Its totient is φ = 61980400944.

The previous prime is 72310467787. The next prime is 72310467833. The reversal of 72310467817 is 71876401327.

It can be written as a sum of positive squares in only one way, i.e., 38644089561 + 33666378256 = 196581^2 + 183484^2 .

It is not a de Polignac number, because 72310467817 - 2⁷ = 72310467689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72310467857) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 737861868 + ... + 737861965.

It is an arithmetic number, because the mean of its divisors is an integer number (14019376423).

Almost surely, 2^72310467817 is an apocalyptic number.

It is an amenable number.

72310467817 is a deficient number, since it is larger than the sum of its proper divisors (11805790721).

72310467817 is a wasteful number, since it uses less digits than its factorization.

72310467817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1475723847 (or 1475723840 counting only the distinct ones).

The product of its (nonzero) digits is 395136, while the sum is 46.

The spelling of 72310467817 in words is "seventy-two billion, three hundred ten million, four hundred sixty-seven thousand, eight hundred seventeen".