11440139878 has 32 divisors (see below), whose sum is σ = 18587620800. Its totient is φ = 5264493696.

The previous prime is 11440139861. The next prime is 11440139899. The reversal of 11440139878 is 87893104411.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 376228 + ... + 405496.

It is an arithmetic number, because the mean of its divisors is an integer number (580863150).

Almost surely, 2^11440139878 is an apocalyptic number.

11440139878 is a deficient number, since it is larger than the sum of its proper divisors (7147480922).

11440139878 is a wasteful number, since it uses less digits than its factorization.

11440139878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29616.

The product of its (nonzero) digits is 193536, while the sum is 46.

The spelling of 11440139878 in words is "eleven billion, four hundred forty million, one hundred thirty-nine thousand, eight hundred seventy-eight".