161151099 has 16 divisors (see below), whose sum is σ = 217140000. Its totient is φ = 106304256.

The previous prime is 161151097. The next prime is 161151119. The reversal of 161151099 is 990151161.

It is not a de Polignac number, because 161151099 - 2¹ = 161151097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (161151097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 155487 + ... + 156519.

It is an arithmetic number, because the mean of its divisors is an integer number (13571250).

Almost surely, 2^161151099 is an apocalyptic number.

161151099 is a deficient number, since it is larger than the sum of its proper divisors (55988901).

161151099 is a wasteful number, since it uses less digits than its factorization.

161151099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1534.

The product of its (nonzero) digits is 2430, while the sum is 33.

The square root of 161151099 is about 12694.5302788248. The cubic root of 161151099 is about 544.1823150369.

The spelling of 161151099 in words is "one hundred sixty-one million, one hundred fifty-one thousand, ninety-nine".