72246823697 has 6 divisors (see below), whose sum is σ = 73127761602. Its totient is φ = 71376373232.

The previous prime is 72246823679. The next prime is 72246823723. The reversal of 72246823697 is 79632864227.

It can be written as a sum of positive squares in only one way, i.e., 46105107841 + 26141715856 = 214721^2 + 161684^2 .

It is not a de Polignac number, because 72246823697 - 2⁶ = 72246823633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72246823097) 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, 5236748 + ... + 5250525.

It is an arithmetic number, because the mean of its divisors is an integer number (12187960267).

Almost surely, 2^72246823697 is an apocalyptic number.

It is an amenable number.

72246823697 is a deficient number, since it is larger than the sum of its proper divisors (880937905).

72246823697 is an equidigital number, since it uses as much as digits as its factorization.

72246823697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10487439 (or 10487356 counting only the distinct ones).

The product of its digits is 12192768, while the sum is 56.

The spelling of 72246823697 in words is "seventy-two billion, two hundred forty-six million, eight hundred twenty-three thousand, six hundred ninety-seven".