616398340440964 has 24 divisors (see below), whose sum is σ = 1148460086388888. Its totient is φ = 288467211640320.

The previous prime is 616398340440959. The next prime is 616398340440977. The reversal of 616398340440964 is 469044043893616.

It can be written as a sum of positive squares in 4 ways, for example, as 889928089600 + 615508412351364 = 943360^2 + 24809442^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 616398340440964.

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, 25040544259 + ... + 25040568874.

It is an arithmetic number, because the mean of its divisors is an integer number (47852503599537).

Almost surely, 2^{616398340440964} is an apocalyptic number.

It is an amenable number.

616398340440964 is a deficient number, since it is larger than the sum of its proper divisors (532061745947924).

616398340440964 is a wasteful number, since it uses less digits than its factorization.

616398340440964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50081113335 (or 50081113333 counting only the distinct ones).

The product of its (nonzero) digits is 322486272, while the sum is 67.

The spelling of 616398340440964 in words is "six hundred sixteen trillion, three hundred ninety-eight billion, three hundred forty million, four hundred forty thousand, nine hundred sixty-four".