2689289299866 has 64 divisors (see below), whose sum is σ = 5961460861440. Its totient is φ = 803647953600.

The previous prime is 2689289299819. The next prime is 2689289299877. The reversal of 2689289299866 is 6689929829862.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3138360 + ... + 3902291.

It is an arithmetic number, because the mean of its divisors is an integer number (93147825960).

Almost surely, 2^{2689289299866} is an apocalyptic number.

2689289299866 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

2689289299866 is an abundant number, since it is smaller than the sum of its proper divisors (3272171561574).

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

2689289299866 is a wasteful number, since it uses less digits than its factorization.

2689289299866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7040811.

The product of its digits is 5804752896, while the sum is 84.

The spelling of 2689289299866 in words is "two trillion, six hundred eighty-nine billion, two hundred eighty-nine million, two hundred ninety-nine thousand, eight hundred sixty-six".