169636980645 has 32 divisors (see below), whose sum is σ = 328992935040. Its totient is φ = 82248232320.

The previous prime is 169636980637. The next prime is 169636980659. The reversal of 169636980645 is 546089636961.

It is not a de Polignac number, because 169636980645 - 2³ = 169636980637 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 57115344 + ... + 57118313.

It is an arithmetic number, because the mean of its divisors is an integer number (10281029220).

Almost surely, 2^169636980645 is an apocalyptic number.

169636980645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

169636980645 is a deficient number, since it is larger than the sum of its proper divisors (159355954395).

169636980645 is a wasteful number, since it uses less digits than its factorization.

169636980645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114233682 (or 114233676 counting only the distinct ones).

The product of its (nonzero) digits is 50388480, while the sum is 63.

The spelling of 169636980645 in words is "one hundred sixty-nine billion, six hundred thirty-six million, nine hundred eighty thousand, six hundred forty-five".