11866769687856 has 40 divisors (see below), whose sum is σ = 30722033029120. Its totient is φ = 3947046497856.

The previous prime is 11866769687819. The next prime is 11866769687893. The reversal of 11866769687856 is 65878696766811.

It is an interprime number because it is at equal distance from previous prime (11866769687819) and next prime (11866769687893).

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, 266958736 + ... + 267003183.

It is an arithmetic number, because the mean of its divisors is an integer number (768050825728).

Almost surely, 2^{11866769687856} is an apocalyptic number.

11866769687856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

11866769687856 is an abundant number, since it is smaller than the sum of its proper divisors (18855263341264).

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

11866769687856 is a wasteful number, since it uses less digits than its factorization.

11866769687856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 533962393 (or 533962387 counting only the distinct ones).

The product of its digits is 8778792960, while the sum is 84.

The spelling of 11866769687856 in words is "eleven trillion, eight hundred sixty-six billion, seven hundred sixty-nine million, six hundred eighty-seven thousand, eight hundred fifty-six".