161601600177 has 16 divisors (see below), whose sum is σ = 253492706880. Its totient is φ = 101397082176.

The previous prime is 161601600151. The next prime is 161601600179. The reversal of 161601600177 is 771006106161.

It is not a de Polignac number, because 161601600177 - 2⁶ = 161601600113 is a prime.

It is a super-2 number, since 2×161601600177² (a number of 23 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (161601600179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 176036143 + ... + 176037060.

It is an arithmetic number, because the mean of its divisors is an integer number (15843294180).

Almost surely, 2^161601600177 is an apocalyptic number.

161601600177 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

161601600177 is a deficient number, since it is larger than the sum of its proper divisors (91891106703).

161601600177 is a wasteful number, since it uses less digits than its factorization.

161601600177 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352073229 (or 352073223 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 36.

The spelling of 161601600177 in words is "one hundred sixty-one billion, six hundred one million, six hundred thousand, one hundred seventy-seven".