11439541977 has 8 divisors (see below), whose sum is σ = 15330148416. Its totient is φ = 7587648432.

The previous prime is 11439541951. The next prime is 11439541987. The reversal of 11439541977 is 77914593411.

It is a happy number.

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

It is not a de Polignac number, because 11439541977 - 2⁸ = 11439541721 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11439541987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9677533 + ... + 9678714.

It is an arithmetic number, because the mean of its divisors is an integer number (1916268552).

Almost surely, 2^11439541977 is an apocalyptic number.

It is an amenable number.

11439541977 is a deficient number, since it is larger than the sum of its proper divisors (3890606439).

11439541977 is a wasteful number, since it uses less digits than its factorization.

11439541977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19356447.

The product of its digits is 952560, while the sum is 51.

The spelling of 11439541977 in words is "eleven billion, four hundred thirty-nine million, five hundred forty-one thousand, nine hundred seventy-seven".