2780558613889 has 12 divisors (see below), whose sum is σ = 3254371102704. Its totient is φ = 2368714254984.

The previous prime is 2780558613887. The next prime is 2780558613893. The reversal of 2780558613889 is 9883168550872.

It is not a de Polignac number, because 2780558613889 - 2¹ = 2780558613887 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2780558613887) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 174059787 + ... + 174075760.

It is an arithmetic number, because the mean of its divisors is an integer number (271197591892).

Almost surely, 2^{2780558613889} is an apocalyptic number.

It is an amenable number.

2780558613889 is a deficient number, since it is larger than the sum of its proper divisors (473812488815).

2780558613889 is a wasteful number, since it uses less digits than its factorization.

2780558613889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348135724 (or 348135717 counting only the distinct ones).

The product of its (nonzero) digits is 232243200, while the sum is 70.

The spelling of 2780558613889 in words is "two trillion, seven hundred eighty billion, five hundred fifty-eight million, six hundred thirteen thousand, eight hundred eighty-nine".