72679173738 has 64 divisors (see below), whose sum is σ = 155986871040. Its totient is φ = 22495122432.

The previous prime is 72679173737. The next prime is 72679173751. The reversal of 72679173738 is 83737197627.

It is not an unprimeable number, because it can be changed into a prime (72679173737) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2813256 + ... + 2838972.

It is an arithmetic number, because the mean of its divisors is an integer number (2437294860).

Almost surely, 2^72679173738 is an apocalyptic number.

72679173738 is an abundant number, since it is smaller than the sum of its proper divisors (83307697302).

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

72679173738 is a wasteful number, since it uses less digits than its factorization.

72679173738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26111.

The product of its digits is 18670176, while the sum is 60.

The spelling of 72679173738 in words is "seventy-two billion, six hundred seventy-nine million, one hundred seventy-three thousand, seven hundred thirty-eight".