349609778472 has 32 divisors (see below), whose sum is σ = 874064296800. Its totient is φ = 116531279424.

The previous prime is 349609778417. The next prime is 349609778491. The reversal of 349609778472 is 274877906943.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 224283 + ... + 865749.

It is an arithmetic number, because the mean of its divisors is an integer number (27314509275).

Almost surely, 2^349609778472 is an apocalyptic number.

It is an amenable number.

349609778472 is an abundant number, since it is smaller than the sum of its proper divisors (524454518328).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

349609778472 is a wasteful number, since it uses less digits than its factorization.

349609778472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 664185 (or 664181 counting only the distinct ones).

The product of its (nonzero) digits is 128024064, while the sum is 66.

The spelling of 349609778472 in words is "three hundred forty-nine billion, six hundred nine million, seven hundred seventy-eight thousand, four hundred seventy-two".