18742047255 has 48 divisors (see below), whose sum is σ = 32726899296. Its totient is φ = 9921864960.

The previous prime is 18742047221. The next prime is 18742047277. The reversal of 18742047255 is 55274024781.

18742047255 is a `hidden beast` number, since 187 + 420 + 47 + 2 + 5 + 5 = 666.

It is not a de Polignac number, because 18742047255 - 2¹⁰ = 18742046231 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 18742047255.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10070025 + ... + 10071885.

It is an arithmetic number, because the mean of its divisors is an integer number (681810402).

Almost surely, 2^18742047255 is an apocalyptic number.

18742047255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

18742047255 is a deficient number, since it is larger than the sum of its proper divisors (13984852041).

18742047255 is a wasteful number, since it uses less digits than its factorization.

18742047255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3408 (or 3405 counting only the distinct ones).

The product of its (nonzero) digits is 627200, while the sum is 45.

The spelling of 18742047255 in words is "eighteen billion, seven hundred forty-two million, forty-seven thousand, two hundred fifty-five".