72323656671 has 16 divisors (see below), whose sum is σ = 110318716928. Its totient is φ = 41286088800.

The previous prime is 72323656633. The next prime is 72323656697. The reversal of 72323656671 is 17665632327.

It is not a de Polignac number, because 72323656671 - 2¹³ = 72323648479 is a prime.

It is a super-2 number, since 2×72323656671² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 72323656671.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72323652671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1716820 + ... + 1758441.

It is an arithmetic number, because the mean of its divisors is an integer number (6894919808).

Almost surely, 2^72323656671 is an apocalyptic number.

72323656671 is a deficient number, since it is larger than the sum of its proper divisors (37995060257).

72323656671 is a wasteful number, since it uses less digits than its factorization.

72323656671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3476262.

The product of its digits is 1905120, while the sum is 48.

The spelling of 72323656671 in words is "seventy-two billion, three hundred twenty-three million, six hundred fifty-six thousand, six hundred seventy-one".