161201355177 has 16 divisors (see below), whose sum is σ = 217195728512. Its totient is φ = 106337733120.

The previous prime is 161201355137. The next prime is 161201355191. The reversal of 161201355177 is 771553102161.

It is not a de Polignac number, because 161201355177 - 2⁶ = 161201355113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161201355137) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1422852 + ... + 1531962.

It is an arithmetic number, because the mean of its divisors is an integer number (13574733032).

Almost surely, 2^161201355177 is an apocalyptic number.

It is an amenable number.

161201355177 is a deficient number, since it is larger than the sum of its proper divisors (55994373335).

161201355177 is a wasteful number, since it uses less digits than its factorization.

161201355177 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114288.

The product of its (nonzero) digits is 44100, while the sum is 39.

The spelling of 161201355177 in words is "one hundred sixty-one billion, two hundred one million, three hundred fifty-five thousand, one hundred seventy-seven".