109718421023 has 4 divisors (see below), whose sum is σ = 109719269880. Its totient is φ = 109717572168.

The previous prime is 109718420947. The next prime is 109718421049. The reversal of 109718421023 is 320124817901.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 109718421023 - 2¹⁴ = 109718404639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109718421523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 185840 + ... + 503957.

It is an arithmetic number, because the mean of its divisors is an integer number (27429817470).

Almost surely, 2^109718421023 is an apocalyptic number.

109718421023 is a deficient number, since it is larger than the sum of its proper divisors (848857).

109718421023 is an equidigital number, since it uses as much as digits as its factorization.

109718421023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 848856.

The product of its (nonzero) digits is 24192, while the sum is 38.

The spelling of 109718421023 in words is "one hundred nine billion, seven hundred eighteen million, four hundred twenty-one thousand, twenty-three".