11774686861 has 16 divisors (see below), whose sum is σ = 14368425984. Its totient is φ = 9429268464.

The previous prime is 11774686841. The next prime is 11774686871. The reversal of 11774686861 is 16868647711.

It is not a de Polignac number, because 11774686861 - 2⁷ = 11774686733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11774686811) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 843481 + ... + 857326.

It is an arithmetic number, because the mean of its divisors is an integer number (898026624).

Almost surely, 2^11774686861 is an apocalyptic number.

It is an amenable number.

11774686861 is a deficient number, since it is larger than the sum of its proper divisors (2593739123).

11774686861 is a wasteful number, since it uses less digits than its factorization.

11774686861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1700880.

The product of its digits is 2709504, while the sum is 55.

The spelling of 11774686861 in words is "eleven billion, seven hundred seventy-four million, six hundred eighty-six thousand, eight hundred sixty-one".