344865689864 has 8 divisors (see below), whose sum is σ = 646623168510. Its totient is φ = 172432844928.

The previous prime is 344865689807. The next prime is 344865689873. The reversal of 344865689864 is 468986568443.

It can be written as a sum of positive squares in only one way, i.e., 318152402500 + 26713287364 = 564050^2 + 163442^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21554105609 + ... + 21554105624.

Almost surely, 2^344865689864 is an apocalyptic number.

It is an amenable number.

344865689864 is a deficient number, since it is larger than the sum of its proper divisors (301757478646).

344865689864 is a wasteful number, since it uses less digits than its factorization.

344865689864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43108211239 (or 43108211235 counting only the distinct ones).

The product of its digits is 955514880, while the sum is 71.

The spelling of 344865689864 in words is "three hundred forty-four billion, eight hundred sixty-five million, six hundred eighty-nine thousand, eight hundred sixty-four".