209425002694 has 8 divisors (see below), whose sum is σ = 314277563160. Its totient is φ = 104665814976.

The previous prime is 209425002673. The next prime is 209425002701. The reversal of 209425002694 is 496200524902.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 209425002694.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23337579 + ... + 23346550.

It is an arithmetic number, because the mean of its divisors is an integer number (39284695395).

Almost surely, 2^209425002694 is an apocalyptic number.

209425002694 is a deficient number, since it is larger than the sum of its proper divisors (104852560466).

209425002694 is a wasteful number, since it uses less digits than its factorization.

209425002694 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46686374.

The product of its (nonzero) digits is 311040, while the sum is 43.

The spelling of 209425002694 in words is "two hundred nine billion, four hundred twenty-five million, two thousand, six hundred ninety-four".