18712554353 has 6 divisors (see below), whose sum is σ = 18972407574. Its totient is φ = 18456212736.

The previous prime is 18712554323. The next prime is 18712554359. The reversal of 18712554353 is 35345521781.

It can be written as a sum of positive squares in 3 ways, for example, as 9586955569 + 9125598784 = 97913^2 + 95528^2 .

It is not a de Polignac number, because 18712554353 - 2¹⁴ = 18712537969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18712554359) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1750400 + ... + 1761057.

It is an arithmetic number, because the mean of its divisors is an integer number (3162067929).

Almost surely, 2^18712554353 is an apocalyptic number.

It is an amenable number.

18712554353 is a deficient number, since it is larger than the sum of its proper divisors (259853221).

18712554353 is an frugal number, since it uses more digits than its factorization.

18712554353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3511603 (or 3511530 counting only the distinct ones).

The product of its digits is 504000, while the sum is 44.

The spelling of 18712554353 in words is "eighteen billion, seven hundred twelve million, five hundred fifty-four thousand, three hundred fifty-three".