108723558321 has 18 divisors (see below), whose sum is σ = 182685163362. Its totient is φ = 62127747360.

The previous prime is 108723558311. The next prime is 108723558323. The reversal of 108723558321 is 123855327801.

108723558321 is a `hidden beast` number, since 1 + 0 + 8 + 72 + 3 + 558 + 3 + 21 = 666.

It can be written as a sum of positive squares in only one way, i.e., 98630543025 + 10093015296 = 314055^2 + 100464^2 .

It is not a de Polignac number, because 108723558321 - 2¹³ = 108723550129 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (108723558323) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 123268900 + ... + 123269781.

Almost surely, 2^108723558321 is an apocalyptic number.

It is an amenable number.

108723558321 is a deficient number, since it is larger than the sum of its proper divisors (73961605041).

108723558321 is a wasteful number, since it uses less digits than its factorization.

108723558321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246538701 (or 246538691 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 45.

The spelling of 108723558321 in words is "one hundred eight billion, seven hundred twenty-three million, five hundred fifty-eight thousand, three hundred twenty-one".