169655556961 has 8 divisors (see below), whose sum is σ = 186608367648. Its totient is φ = 154232323300.

The previous prime is 169655556953. The next prime is 169655556991.

169655556961 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 169655556961 - 2³ = 169655556953 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 169655556893 and 169655556902.

It is not an unprimeable number, because it can be changed into a prime (169655556911) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63731035 + ... + 63733696.

It is an arithmetic number, because the mean of its divisors is an integer number (23326045956).

Almost surely, 2^169655556961 is an apocalyptic number.

169655556961 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

169655556961 is a deficient number, since it is larger than the sum of its proper divisors (16952810687).

169655556961 is an equidigital number, since it uses as much as digits as its factorization.

169655556961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127464764 (or 127464742 counting only the distinct ones).

The product of its digits is 65610000, while the sum is 64.

The spelling of 169655556961 in words is "one hundred sixty-nine billion, six hundred fifty-five million, five hundred fifty-six thousand, nine hundred sixty-one".