169099012649 has 16 divisors (see below), whose sum is σ = 195785740800. Its totient is φ = 143046281664.

The previous prime is 169099012619. The next prime is 169099012657. The reversal of 169099012649 is 946210990961.

169099012649 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 169099012649 - 2²⁰ = 169097964073 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 169099012594 and 169099012603.

It is not an unprimeable number, because it can be changed into a prime (169099012619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1257119 + ... + 1385115.

It is an arithmetic number, because the mean of its divisors is an integer number (12236608800).

Almost surely, 2^169099012649 is an apocalyptic number.

It is an amenable number.

169099012649 is a deficient number, since it is larger than the sum of its proper divisors (26686728151).

169099012649 is a wasteful number, since it uses less digits than its factorization.

169099012649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130472.

The product of its (nonzero) digits is 1889568, while the sum is 56.

The spelling of 169099012649 in words is "one hundred sixty-nine billion, ninety-nine million, twelve thousand, six hundred forty-nine".