11867487847 has 2 divisors, whose sum is σ = 11867487848. Its totient is φ = 11867487846.

The previous prime is 11867487833. The next prime is 11867487869. The reversal of 11867487847 is 74878476811.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11867487847 - 2³¹ = 9720004199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11867487547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5933743923 + 5933743924.

It is an arithmetic number, because the mean of its divisors is an integer number (5933743924).

Almost surely, 2^11867487847 is an apocalyptic number.

11867487847 is a deficient number, since it is larger than the sum of its proper divisors (1).

11867487847 is an equidigital number, since it uses as much as digits as its factorization.

11867487847 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16859136, while the sum is 61.

The spelling of 11867487847 in words is "eleven billion, eight hundred sixty-seven million, four hundred eighty-seven thousand, eight hundred forty-seven".