161127099 has 24 divisors (see below), whose sum is σ = 266404320. Its totient is φ = 91928448.

The previous prime is 161127067. The next prime is 161127101. The reversal of 161127099 is 990721161.

It is not a de Polignac number, because 161127099 - 2⁵ = 161127067 is a prime.

It is not an unprimeable number, because it can be changed into a prime (161127019) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 48607 + ... + 51815.

It is an arithmetic number, because the mean of its divisors is an integer number (11100180).

Almost surely, 2^161127099 is an apocalyptic number.

161127099 is a deficient number, since it is larger than the sum of its proper divisors (105277221).

161127099 is a wasteful number, since it uses less digits than its factorization.

161127099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4019 (or 4016 counting only the distinct ones).

The product of its (nonzero) digits is 6804, while the sum is 36.

The square root of 161127099 is about 12693.5849546139. The cubic root of 161127099 is about 544.1552989341.

It can be divided in two parts, 161 and 127099, that added together give a triangular number (127260 = T₅₀₄).

The spelling of 161127099 in words is "one hundred sixty-one million, one hundred twenty-seven thousand, ninety-nine".