11571986679 has 16 divisors (see below), whose sum is σ = 16836629760. Its totient is φ = 7011388160.

The previous prime is 11571986677. The next prime is 11571986681. The reversal of 11571986679 is 97668917511.

It is an interprime number because it is at equal distance from previous prime (11571986677) and next prime (11571986681).

It is a cyclic number.

It is not a de Polignac number, because 11571986679 - 2¹ = 11571986677 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11571986677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77767 + ... + 170855.

It is an arithmetic number, because the mean of its divisors is an integer number (1052289360).

Almost surely, 2^11571986679 is an apocalyptic number.

11571986679 is a deficient number, since it is larger than the sum of its proper divisors (5264643081).

11571986679 is a wasteful number, since it uses less digits than its factorization.

11571986679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96870.

The product of its digits is 5715360, while the sum is 60.

The spelling of 11571986679 in words is "eleven billion, five hundred seventy-one million, nine hundred eighty-six thousand, six hundred seventy-nine".