18150686768 has 20 divisors (see below), whose sum is σ = 35297696160. Its totient is φ = 9041603904.

The previous prime is 18150686753. The next prime is 18150686783. The reversal of 18150686768 is 86768605181.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (18150686753) and next prime (18150686783).

It is a super-3 number, since 3×18150686768³ (a number of 32 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2104280 + ... + 2112887.

It is an arithmetic number, because the mean of its divisors is an integer number (1764884808).

Almost surely, 2^18150686768 is an apocalyptic number.

It is an amenable number.

18150686768 is a deficient number, since it is larger than the sum of its proper divisors (17147009392).

18150686768 is a wasteful number, since it uses less digits than its factorization.

18150686768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4217444 (or 4217438 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 56.

The spelling of 18150686768 in words is "eighteen billion, one hundred fifty million, six hundred eighty-six thousand, seven hundred sixty-eight".