18161586151 has 2 divisors, whose sum is σ = 18161586152. Its totient is φ = 18161586150.

The previous prime is 18161586119. The next prime is 18161586173. The reversal of 18161586151 is 15168516181.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18161586151 - 2⁵ = 18161586119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18161586098 and 18161586107.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18161586551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9080793075 + 9080793076.

It is an arithmetic number, because the mean of its divisors is an integer number (9080793076).

Almost surely, 2^18161586151 is an apocalyptic number.

18161586151 is a deficient number, since it is larger than the sum of its proper divisors (1).

18161586151 is an equidigital number, since it uses as much as digits as its factorization.

18161586151 is an evil number, because the sum of its binary digits is even.

The product of its digits is 57600, while the sum is 43.

The spelling of 18161586151 in words is "eighteen billion, one hundred sixty-one million, five hundred eighty-six thousand, one hundred fifty-one".