72905354723 has 8 divisors (see below), whose sum is σ = 73042089120. Its totient is φ = 72768729280.

The previous prime is 72905354707. The next prime is 72905354773. The reversal of 72905354723 is 32745350927.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 72905354723 - 2⁴ = 72905354707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72905354773) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1379633 + ... + 1431501.

It is an arithmetic number, because the mean of its divisors is an integer number (9130261140).

Almost surely, 2^72905354723 is an apocalyptic number.

72905354723 is a deficient number, since it is larger than the sum of its proper divisors (136734397).

72905354723 is a wasteful number, since it uses less digits than its factorization.

72905354723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54477.

The product of its (nonzero) digits is 1587600, while the sum is 47.

The spelling of 72905354723 in words is "seventy-two billion, nine hundred five million, three hundred fifty-four thousand, seven hundred twenty-three".