161151104 has 16 divisors (see below), whose sum is σ = 321043470. Its totient is φ = 80575488.

The previous prime is 161151097. The next prime is 161151119. The reversal of 161151104 is 401151161.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 105678400 + 55472704 = 10280^2 + 7448^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 629369 + ... + 629624.

Almost surely, 2^161151104 is an apocalyptic number.

It is an amenable number.

161151104 is a deficient number, since it is larger than the sum of its proper divisors (159892366).

161151104 is an equidigital number, since it uses as much as digits as its factorization.

161151104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1259007 (or 1258995 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 20.

The square root of 161151104 is about 12694.5304757600. The cubic root of 161151104 is about 544.1823206650.

The spelling of 161151104 in words is "one hundred sixty-one million, one hundred fifty-one thousand, one hundred four".