209837057426 has 8 divisors (see below), whose sum is σ = 331321669680. Its totient is φ = 99396500868.

The previous prime is 209837057411. The next prime is 209837057453. The reversal of 209837057426 is 624750738902.

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

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, 2761013876 + ... + 2761013951.

It is an arithmetic number, because the mean of its divisors is an integer number (41415208710).

Almost surely, 2^209837057426 is an apocalyptic number.

209837057426 is a deficient number, since it is larger than the sum of its proper divisors (121484612254).

209837057426 is a wasteful number, since it uses less digits than its factorization.

209837057426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5522027848.

The product of its (nonzero) digits is 5080320, while the sum is 53.

The spelling of 209837057426 in words is "two hundred nine billion, eight hundred thirty-seven million, fifty-seven thousand, four hundred twenty-six".