72749893918 has 32 divisors (see below), whose sum is σ = 124106121216. Its totient is φ = 31730036448.

The previous prime is 72749893883. The next prime is 72749893919. The reversal of 72749893918 is 81939894727.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72749893919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 683230 + ... + 782497.

It is an arithmetic number, because the mean of its divisors is an integer number (3878316288).

Almost surely, 2^72749893918 is an apocalyptic number.

72749893918 is a deficient number, since it is larger than the sum of its proper divisors (51356227298).

72749893918 is a wasteful number, since it uses less digits than its factorization.

72749893918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1465848.

The product of its digits is 54867456, while the sum is 67.

The spelling of 72749893918 in words is "seventy-two billion, seven hundred forty-nine million, eight hundred ninety-three thousand, nine hundred eighteen".