11867653685 has 4 divisors (see below), whose sum is σ = 14241184428. Its totient is φ = 9494122944.

The previous prime is 11867653667. The next prime is 11867653687. The reversal of 11867653685 is 58635676811.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3177125956 + 8690527729 = 56366^2 + 93223^2 .

It is a cyclic number.

It is not a de Polignac number, because 11867653685 - 2¹⁸ = 11867391541 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11867653685.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11867653687) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1186765364 + ... + 1186765373.

It is an arithmetic number, because the mean of its divisors is an integer number (3560296107).

Almost surely, 2^11867653685 is an apocalyptic number.

It is an amenable number.

11867653685 is a deficient number, since it is larger than the sum of its proper divisors (2373530743).

11867653685 is an equidigital number, since it uses as much as digits as its factorization.

11867653685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2373530742.

The product of its digits is 7257600, while the sum is 56.

The spelling of 11867653685 in words is "eleven billion, eight hundred sixty-seven million, six hundred fifty-three thousand, six hundred eighty-five".