72045923454 has 24 divisors (see below), whose sum is σ = 156425405760. Its totient is φ = 23965168608.

The previous prime is 72045923437. The next prime is 72045923501. The reversal of 72045923454 is 45432954027.

72045923454 is a `hidden beast` number, since 7 + 2 + 0 + 4 + 592 + 3 + 4 + 54 = 666.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 4169407 + ... + 4186650.

It is an arithmetic number, because the mean of its divisors is an integer number (6517725240).

Almost surely, 2^72045923454 is an apocalyptic number.

72045923454 is an abundant number, since it is smaller than the sum of its proper divisors (84379482306).

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

72045923454 is a wasteful number, since it uses less digits than its factorization.

72045923454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8356544 (or 8356541 counting only the distinct ones).

The product of its (nonzero) digits is 1209600, while the sum is 45.

The spelling of 72045923454 in words is "seventy-two billion, forty-five million, nine hundred twenty-three thousand, four hundred fifty-four".