161322035574 has 32 divisors (see below), whose sum is σ = 374780941056. Its totient is φ = 45336402720.

The previous prime is 161322035527. The next prime is 161322035587. The reversal of 161322035574 is 475530223161.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31481052 + ... + 31486175.

It is an arithmetic number, because the mean of its divisors is an integer number (11711904408).

Almost surely, 2^161322035574 is an apocalyptic number.

161322035574 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

161322035574 is an abundant number, since it is smaller than the sum of its proper divisors (213458905482).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161322035574 is a wasteful number, since it uses less digits than its factorization.

161322035574 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62967300.

The product of its (nonzero) digits is 151200, while the sum is 39.

The spelling of 161322035574 in words is "one hundred sixty-one billion, three hundred twenty-two million, thirty-five thousand, five hundred seventy-four".