11827967878 has 16 divisors (see below), whose sum is σ = 18078548544. Its totient is φ = 5802489000.

The previous prime is 11827967867. The next prime is 11827967891. The reversal of 11827967878 is 87876972811.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 142200 + ... + 209467.

It is an arithmetic number, because the mean of its divisors is an integer number (1129909284).

Almost surely, 2^11827967878 is an apocalyptic number.

11827967878 is a deficient number, since it is larger than the sum of its proper divisors (6250580666).

11827967878 is a wasteful number, since it uses less digits than its factorization.

11827967878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351987.

The product of its digits is 18966528, while the sum is 64.

The spelling of 11827967878 in words is "eleven billion, eight hundred twenty-seven million, nine hundred sixty-seven thousand, eight hundred seventy-eight".