18143669115 has 256 divisors, whose sum is σ = 39436830720. Its totient is φ = 7894195200.

The previous prime is 18143669053. The next prime is 18143669129. The reversal of 18143669115 is 51196634181.

It is not a de Polignac number, because 18143669115 - 2⁶ = 18143669051 is a prime.

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

It is an unprimeable number.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 64111764 + ... + 64112046.

It is an arithmetic number, because the mean of its divisors is an integer number (154050120).

Almost surely, 2^18143669115 is an apocalyptic number.

18143669115 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

18143669115 is an abundant number, since it is smaller than the sum of its proper divisors (21293161605).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18143669115 is a wasteful number, since it uses less digits than its factorization.

18143669115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374 (or 356 counting only the distinct ones).

The product of its digits is 155520, while the sum is 45.

The spelling of 18143669115 in words is "eighteen billion, one hundred forty-three million, six hundred sixty-nine thousand, one hundred fifteen".