209954134093 has 24 divisors (see below), whose sum is σ = 241236208640. Its totient is φ = 182372018400.

The previous prime is 209954134087. The next prime is 209954134133. The reversal of 209954134093 is 390431459902.

209954134093 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 209954134093 - 2⁹ = 209954133581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (209954132093) 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 23 ways as a sum of consecutive naturals, for example, 57930 + ... + 650587.

Almost surely, 2^209954134093 is an apocalyptic number.

It is an amenable number.

209954134093 is a deficient number, since it is larger than the sum of its proper divisors (31282074547).

209954134093 is a wasteful number, since it uses less digits than its factorization.

209954134093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 708649 (or 708638 counting only the distinct ones).

The product of its (nonzero) digits is 1049760, while the sum is 49.

The spelling of 209954134093 in words is "two hundred nine billion, nine hundred fifty-four million, one hundred thirty-four thousand, ninety-three".