72423723319612 has 36 divisors (see below), whose sum is σ = 150570901996704. Its totient is φ = 30378339868800.

The previous prime is 72423723319529. The next prime is 72423723319613. The reversal of 72423723319612 is 21691332732427.

It is a super-2 number, since 2×72423723319612² (a number of 29 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 72423723319612.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72423723319613) 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 11 ways as a sum of consecutive naturals, for example, 3930935389 + ... + 3930953812.

It is an arithmetic number, because the mean of its divisors is an integer number (4182525055464).

Almost surely, 2^{72423723319612} is an apocalyptic number.

It is an amenable number.

72423723319612 is an abundant number, since it is smaller than the sum of its proper divisors (78147178677092).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72423723319612 is a wasteful number, since it uses less digits than its factorization.

72423723319612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7861889266 (or 7861889257 counting only the distinct ones).

The product of its digits is 4572288, while the sum is 52.

The spelling of 72423723319612 in words is "seventy-two trillion, four hundred twenty-three billion, seven hundred twenty-three million, three hundred nineteen thousand, six hundred twelve".