209349742432 has 24 divisors (see below), whose sum is σ = 412172743752. Its totient is φ = 104670950400.

The previous prime is 209349742403. The next prime is 209349742453. The reversal of 209349742432 is 234247943902.

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, 868432 + ... + 1082992.

It is an arithmetic number, because the mean of its divisors is an integer number (17173864323).

Almost surely, 2^209349742432 is an apocalyptic number.

It is an amenable number.

209349742432 is a deficient number, since it is larger than the sum of its proper divisors (202823001320).

209349742432 is a wasteful number, since it uses less digits than its factorization.

209349742432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245062 (or 245054 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 49.

The spelling of 209349742432 in words is "two hundred nine billion, three hundred forty-nine million, seven hundred forty-two thousand, four hundred thirty-two".