72323656775 has 12 divisors (see below), whose sum is σ = 90552030192. Its totient is φ = 57297186240.

The previous prime is 72323656723. The next prime is 72323656777. The reversal of 72323656775 is 57765632327.

It is not a de Polignac number, because 72323656775 - 2⁸ = 72323656519 is a prime.

It is a super-2 number, since 2×72323656775² (a number of 23 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (53) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72323656777) 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 11 ways as a sum of consecutive naturals, for example, 14040854 + ... + 14046003.

It is an arithmetic number, because the mean of its divisors is an integer number (7546002516).

Almost surely, 2^72323656775 is an apocalyptic number.

72323656775 is a deficient number, since it is larger than the sum of its proper divisors (18228373417).

72323656775 is a wasteful number, since it uses less digits than its factorization.

72323656775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28086970 (or 28086965 counting only the distinct ones).

The product of its digits is 11113200, while the sum is 53.

The spelling of 72323656775 in words is "seventy-two billion, three hundred twenty-three million, six hundred fifty-six thousand, seven hundred seventy-five".