72919107075 has 18 divisors (see below), whose sum is σ = 120563456932. Its totient is φ = 38888943200.

The previous prime is 72919107059. The next prime is 72919107083. The reversal of 72919107075 is 57070191927.

It is not a de Polignac number, because 72919107075 - 2⁴ = 72919107059 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2322985 + ... + 2354165.

Almost surely, 2^72919107075 is an apocalyptic number.

72919107075 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

72919107075 is a deficient number, since it is larger than the sum of its proper divisors (47644349857).

72919107075 is an frugal number, since it uses more digits than its factorization.

72919107075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62375 (or 31189 counting only the distinct ones).

The product of its (nonzero) digits is 277830, while the sum is 48.

Multiplying 72919107075 by its sum of digits (48), we get a square (3500117139600 = 1870860²).

The spelling of 72919107075 in words is "seventy-two billion, nine hundred nineteen million, one hundred seven thousand, seventy-five".