163890344077 has 16 divisors (see below), whose sum is σ = 172804262400. Its totient is φ = 155005498800.

The previous prime is 163890344063. The next prime is 163890344087. The reversal of 163890344077 is 770443098361.

It is a cyclic number.

It is not a de Polignac number, because 163890344077 - 2²³ = 163881955469 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163890344087) by changing a digit.

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, 36361258 + ... + 36365764.

It is an arithmetic number, because the mean of its divisors is an integer number (10800266400).

Almost surely, 2^163890344077 is an apocalyptic number.

It is an amenable number.

163890344077 is a deficient number, since it is larger than the sum of its proper divisors (8913918323).

163890344077 is a wasteful number, since it uses less digits than its factorization.

163890344077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7296.

The product of its (nonzero) digits is 3048192, while the sum is 52.

The spelling of 163890344077 in words is "one hundred sixty-three billion, eight hundred ninety million, three hundred forty-four thousand, seventy-seven".