72090870654 has 32 divisors (see below), whose sum is σ = 157299652224. Its totient is φ = 21844262880.

The previous prime is 72090870653. The next prime is 72090870659. The reversal of 72090870654 is 45607809027.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72090870653) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1370952 + ... + 1422564.

It is an arithmetic number, because the mean of its divisors is an integer number (4915614132).

Almost surely, 2^72090870654 is an apocalyptic number.

72090870654 is an abundant number, since it is smaller than the sum of its proper divisors (85208781570).

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

72090870654 is a wasteful number, since it uses less digits than its factorization.

72090870654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72792.

The product of its (nonzero) digits is 846720, while the sum is 48.

The spelling of 72090870654 in words is "seventy-two billion, ninety million, eight hundred seventy thousand, six hundred fifty-four".