11859666278 has 8 divisors (see below), whose sum is σ = 18725788920. Its totient is φ = 5617736640.

The previous prime is 11859666271. The next prime is 11859666323. The reversal of 11859666278 is 87266695811.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11859666271) 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, 156048203 + ... + 156048278.

It is an arithmetic number, because the mean of its divisors is an integer number (2340723615).

Almost surely, 2^11859666278 is an apocalyptic number.

11859666278 is a deficient number, since it is larger than the sum of its proper divisors (6866122642).

11859666278 is a wasteful number, since it uses less digits than its factorization.

11859666278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312096502.

The product of its digits is 8709120, while the sum is 59.

The spelling of 11859666278 in words is "eleven billion, eight hundred fifty-nine million, six hundred sixty-six thousand, two hundred seventy-eight".