72324771452 has 12 divisors (see below), whose sum is σ = 127534521576. Its totient is φ = 35886336720.

The previous prime is 72324771443. The next prime is 72324771469. The reversal of 72324771452 is 25417742327.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69011663 + ... + 69012710.

It is an arithmetic number, because the mean of its divisors is an integer number (10627876798).

Almost surely, 2^72324771452 is an apocalyptic number.

It is an amenable number.

72324771452 is a deficient number, since it is larger than the sum of its proper divisors (55209750124).

72324771452 is a wasteful number, since it uses less digits than its factorization.

72324771452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138024508 (or 138024506 counting only the distinct ones).

The product of its digits is 658560, while the sum is 44.

The spelling of 72324771452 in words is "seventy-two billion, three hundred twenty-four million, seven hundred seventy-one thousand, four hundred fifty-two".