349778671369648 has 40 divisors (see below), whose sum is σ = 699622241417856. Its totient is φ = 169232042918400.

The previous prime is 349778671369639. The next prime is 349778671369649. The reversal of 349778671369648 is 846963176877943.

It is not an unprimeable number, because it can be changed into a prime (349778671369649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27358261 + ... + 38053012.

Almost surely, 2^{349778671369648} is an apocalyptic number.

It is an amenable number.

349778671369648 is an abundant number, since it is smaller than the sum of its proper divisors (349843570048208).

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

349778671369648 is a wasteful number, since it uses less digits than its factorization.

349778671369648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65422093 (or 65422087 counting only the distinct ones).

The product of its digits is 55306395648, while the sum is 88.

The spelling of 349778671369648 in words is "three hundred forty-nine trillion, seven hundred seventy-eight billion, six hundred seventy-one million, three hundred sixty-nine thousand, six hundred forty-eight".