349720257804 has 12 divisors (see below), whose sum is σ = 816013934904. Its totient is φ = 116573419264.

The previous prime is 349720257791. The next prime is 349720257863. The reversal of 349720257804 is 408752027943.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 14571677397 + ... + 14571677420.

It is an arithmetic number, because the mean of its divisors is an integer number (68001161242).

Almost surely, 2^349720257804 is an apocalyptic number.

It is an amenable number.

349720257804 is an abundant number, since it is smaller than the sum of its proper divisors (466293677100).

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

349720257804 is a wasteful number, since it uses less digits than its factorization.

349720257804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29143354824 (or 29143354822 counting only the distinct ones).

The product of its (nonzero) digits is 3386880, while the sum is 51.

The spelling of 349720257804 in words is "three hundred forty-nine billion, seven hundred twenty million, two hundred fifty-seven thousand, eight hundred four".