616599890778 has 16 divisors (see below), whose sum is σ = 1233243212256. Its totient is φ = 205526058480.

The previous prime is 616599890761. The next prime is 616599890839. The reversal of 616599890778 is 877098995616.

616599890778 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

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, 1623576 + ... + 1967027.

It is an arithmetic number, because the mean of its divisors is an integer number (77077700766).

Almost surely, 2^616599890778 is an apocalyptic number.

616599890778 is an abundant number, since it is smaller than the sum of its proper divisors (616643321478).

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

616599890778 is a wasteful number, since it uses less digits than its factorization.

616599890778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3619229.

The product of its (nonzero) digits is 411505920, while the sum is 75.

The spelling of 616599890778 in words is "six hundred sixteen billion, five hundred ninety-nine million, eight hundred ninety thousand, seven hundred seventy-eight".