18475427455 has 4 divisors (see below), whose sum is σ = 22170512952. Its totient is φ = 14780341960.

The previous prime is 18475427441. The next prime is 18475427471. The reversal of 18475427455 is 55472457481.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 18475427455 - 2¹¹ = 18475425407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1847542741 + ... + 1847542750.

It is an arithmetic number, because the mean of its divisors is an integer number (5542628238).

Almost surely, 2^18475427455 is an apocalyptic number.

18475427455 is a deficient number, since it is larger than the sum of its proper divisors (3695085497).

18475427455 is an equidigital number, since it uses as much as digits as its factorization.

18475427455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3695085496.

The product of its digits is 6272000, while the sum is 52.

The spelling of 18475427455 in words is "eighteen billion, four hundred seventy-five million, four hundred twenty-seven thousand, four hundred fifty-five".