161099211074 has 32 divisors (see below), whose sum is σ = 255284153280. Its totient is φ = 76035359232.

The previous prime is 161099211067. The next prime is 161099211109. The reversal of 161099211074 is 470112990161.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 27568397 + ... + 27574239.

It is an arithmetic number, because the mean of its divisors is an integer number (7977629790).

Almost surely, 2^161099211074 is an apocalyptic number.

161099211074 is a deficient number, since it is larger than the sum of its proper divisors (94184942206).

161099211074 is a wasteful number, since it uses less digits than its factorization.

161099211074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8354.

The product of its (nonzero) digits is 27216, while the sum is 41.

The spelling of 161099211074 in words is "one hundred sixty-one billion, ninety-nine million, two hundred eleven thousand, seventy-four".