11841971878 has 16 divisors (see below), whose sum is σ = 19901497104. Its totient is φ = 5237235360.

The previous prime is 11841971873. The next prime is 11841971891. The reversal of 11841971878 is 87817914811.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11841971873) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7273125 + ... + 7274752.

It is an arithmetic number, because the mean of its divisors is an integer number (1243843569).

Almost surely, 2^11841971878 is an apocalyptic number.

11841971878 is a deficient number, since it is larger than the sum of its proper divisors (8059525226).

11841971878 is a wasteful number, since it uses less digits than its factorization.

11841971878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14547927.

The product of its digits is 903168, while the sum is 55.

The spelling of 11841971878 in words is "eleven billion, eight hundred forty-one million, nine hundred seventy-one thousand, eight hundred seventy-eight".