18016771137 has 4 divisors (see below), whose sum is σ = 24022361520. Its totient is φ = 12011180756.

The previous prime is 18016771103. The next prime is 18016771141. The reversal of 18016771137 is 73117761081.

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 18016771137 - 2²² = 18012576833 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18016771237) 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, 3002795187 + ... + 3002795192.

It is an arithmetic number, because the mean of its divisors is an integer number (6005590380).

Almost surely, 2^18016771137 is an apocalyptic number.

It is an amenable number.

18016771137 is a deficient number, since it is larger than the sum of its proper divisors (6005590383).

18016771137 is an equidigital number, since it uses as much as digits as its factorization.

18016771137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6005590382.

The product of its (nonzero) digits is 49392, while the sum is 42.

The spelling of 18016771137 in words is "eighteen billion, sixteen million, seven hundred seventy-one thousand, one hundred thirty-seven".