163810979096661 has 48 divisors (see below), whose sum is σ = 264535338412800. Its totient is φ = 96986736153216.

The previous prime is 163810979096629. The next prime is 163810979096663. The reversal of 163810979096661 is 166690979018361.

It is not a de Polignac number, because 163810979096661 - 2⁵ = 163810979096629 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 163810979096661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163810979096663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 84338541 + ... + 86258978.

It is an arithmetic number, because the mean of its divisors is an integer number (5511152883600).

Almost surely, 2^{163810979096661} is an apocalyptic number.

It is an amenable number.

163810979096661 is a deficient number, since it is larger than the sum of its proper divisors (100724359316139).

163810979096661 is a wasteful number, since it uses less digits than its factorization.

163810979096661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170597850 (or 170597847 counting only the distinct ones).

The product of its (nonzero) digits is 158723712, while the sum is 72.

The spelling of 163810979096661 in words is "one hundred sixty-three trillion, eight hundred ten billion, nine hundred seventy-nine million, ninety-six thousand, six hundred sixty-one".