72818734742 has 16 divisors (see below), whose sum is σ = 117706268400. Its totient is φ = 33586931232.

The previous prime is 72818734739. The next prime is 72818734771. The reversal of 72818734742 is 24743781827.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 863768 + ... + 944315.

It is an arithmetic number, because the mean of its divisors is an integer number (7356641775).

Almost surely, 2^72818734742 is an apocalyptic number.

72818734742 is a deficient number, since it is larger than the sum of its proper divisors (44887533658).

72818734742 is a wasteful number, since it uses less digits than its factorization.

72818734742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1809647.

The product of its digits is 4214784, while the sum is 53.

The spelling of 72818734742 in words is "seventy-two billion, eight hundred eighteen million, seven hundred thirty-four thousand, seven hundred forty-two".