161099131594 has 8 divisors (see below), whose sum is σ = 241662021408. Its totient is φ = 80545124460.

The previous prime is 161099131591. The next prime is 161099131651. The reversal of 161099131594 is 495131990161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (161099131591) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2175142 + ... + 2247985.

It is an arithmetic number, because the mean of its divisors is an integer number (30207752676).

Almost surely, 2^161099131594 is an apocalyptic number.

161099131594 is a deficient number, since it is larger than the sum of its proper divisors (80562889814).

161099131594 is a wasteful number, since it uses less digits than its factorization.

161099131594 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4441340.

The product of its (nonzero) digits is 262440, while the sum is 49.

The spelling of 161099131594 in words is "one hundred sixty-one billion, ninety-nine million, one hundred thirty-one thousand, five hundred ninety-four".