18461404755 has 12 divisors (see below), whose sum is σ = 31999768320. Its totient is φ = 9846082512.

The previous prime is 18461404721. The next prime is 18461404769. The reversal of 18461404755 is 55740416481.

18461404755 is a `hidden beast` number, since 1 + 84 + 61 + 40 + 475 + 5 = 666.

It is not a de Polignac number, because 18461404755 - 2⁹ = 18461404243 is a prime.

It is a super-2 number, since 2×18461404755² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 410253439 = 18461404755 / (1 + 8 + 4 + 6 + 1 + 4 + 0 + 4 + 7 + 5 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 18461404755.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 205126675 + ... + 205126764.

It is an arithmetic number, because the mean of its divisors is an integer number (2666647360).

Almost surely, 2^18461404755 is an apocalyptic number.

18461404755 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

18461404755 is a deficient number, since it is larger than the sum of its proper divisors (13538363565).

18461404755 is a wasteful number, since it uses less digits than its factorization.

18461404755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410253450 (or 410253447 counting only the distinct ones).

The product of its (nonzero) digits is 537600, while the sum is 45.

The spelling of 18461404755 in words is "eighteen billion, four hundred sixty-one million, four hundred four thousand, seven hundred fifty-five".