161088699 has 4 divisors (see below), whose sum is σ = 214784936. Its totient is φ = 107392464.

The previous prime is 161088691. The next prime is 161088721. The reversal of 161088699 is 996880161.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 996880161 = 3 ⋅332293387.

It is not a de Polignac number, because 161088699 - 2³ = 161088691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161088691) 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, 26848114 + ... + 26848119.

It is an arithmetic number, because the mean of its divisors is an integer number (53696234).

Almost surely, 2^161088699 is an apocalyptic number.

161088699 is a deficient number, since it is larger than the sum of its proper divisors (53696237).

161088699 is an equidigital number, since it uses as much as digits as its factorization.

161088699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53696236.

The product of its (nonzero) digits is 186624, while the sum is 48.

The square root of 161088699 is about 12692.0722894254. The cubic root of 161088699 is about 544.1120675890.

It can be divided in two parts, 1610 and 88699, that added together give a palindrome (90309).

The spelling of 161088699 in words is "one hundred sixty-one million, eighty-eight thousand, six hundred ninety-nine".