18287455061 has 4 divisors (see below), whose sum is σ = 18289346400. Its totient is φ = 18285563724.

The previous prime is 18287455057. The next prime is 18287455063. The reversal of 18287455061 is 16055478281.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 18287455061 - 2² = 18287455057 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18287454997 and 18287455015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18287455063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 931091 + ... + 950528.

It is an arithmetic number, because the mean of its divisors is an integer number (4572336600).

Almost surely, 2^18287455061 is an apocalyptic number.

It is an amenable number.

18287455061 is a deficient number, since it is larger than the sum of its proper divisors (1891339).

18287455061 is an equidigital number, since it uses as much as digits as its factorization.

18287455061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1891338.

The product of its (nonzero) digits is 537600, while the sum is 47.

The spelling of 18287455061 in words is "eighteen billion, two hundred eighty-seven million, four hundred fifty-five thousand, sixty-one".