18178700051 has 8 divisors (see below), whose sum is σ = 18351488304. Its totient is φ = 18005965600.

The previous prime is 18178700047. The next prime is 18178700087. The reversal of 18178700051 is 15000787181.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18178700051 - 2² = 18178700047 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18178699978 and 18178700014.

It is not an unprimeable number, because it can be changed into a prime (18178700011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1093961 + ... + 1110453.

It is an arithmetic number, because the mean of its divisors is an integer number (2293936038).

Almost surely, 2^18178700051 is an apocalyptic number.

18178700051 is a deficient number, since it is larger than the sum of its proper divisors (172788253).

18178700051 is a wasteful number, since it uses less digits than its factorization.

18178700051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26901.

The product of its (nonzero) digits is 15680, while the sum is 38.

The spelling of 18178700051 in words is "eighteen billion, one hundred seventy-eight million, seven hundred thousand, fifty-one".