169898112261 has 12 divisors (see below), whose sum is σ = 245662180192. Its totient is φ = 113148271656.

The previous prime is 169898112247. The next prime is 169898112287. The reversal of 169898112261 is 162211898961.

It is not a de Polignac number, because 169898112261 - 2⁵ = 169898112229 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 169898112198 and 169898112207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (169898112161) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9752191 + ... + 9769596.

Almost surely, 2^169898112261 is an apocalyptic number.

It is an amenable number.

169898112261 is a deficient number, since it is larger than the sum of its proper divisors (75764067931).

169898112261 is a wasteful number, since it uses less digits than its factorization.

169898112261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19522760 (or 19522757 counting only the distinct ones).

The product of its digits is 746496, while the sum is 54.

The spelling of 169898112261 in words is "one hundred sixty-nine billion, eight hundred ninety-eight million, one hundred twelve thousand, two hundred sixty-one".