18016662915 has 12 divisors (see below), whose sum is σ = 31228882464. Its totient is φ = 9608886864.

The previous prime is 18016662907. The next prime is 18016662919. The reversal of 18016662915 is 51926661081.

It is not a de Polignac number, because 18016662915 - 2³ = 18016662907 is a prime.

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: 400370287 = 18016662915 / (1 + 8 + 0 + 1 + 6 + 6 + 6 + 2 + 9 + 1 + 5).

It is not an unprimeable number, because it can be changed into a prime (18016662919) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 200185099 + ... + 200185188.

It is an arithmetic number, because the mean of its divisors is an integer number (2602406872).

Almost surely, 2^18016662915 is an apocalyptic number.

18016662915 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

18016662915 is a deficient number, since it is larger than the sum of its proper divisors (13212219549).

18016662915 is a wasteful number, since it uses less digits than its factorization.

18016662915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400370298 (or 400370295 counting only the distinct ones).

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

The spelling of 18016662915 in words is "eighteen billion, sixteen million, six hundred sixty-two thousand, nine hundred fifteen".