11844440777851 has 16 divisors (see below), whose sum is σ = 13312827645408. Its totient is φ = 10443183379200.

The previous prime is 11844440777849. The next prime is 11844440777863. The reversal of 11844440777851 is 15877704444811.

It is a happy number.

It is not a de Polignac number, because 11844440777851 - 2¹ = 11844440777849 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11844440777851.

It is not an unprimeable number, because it can be changed into a prime (11844440777951) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46361140 + ... + 46615921.

It is an arithmetic number, because the mean of its divisors is an integer number (832051727838).

Almost surely, 2^{11844440777851} is an apocalyptic number.

11844440777851 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11844440777851 is a deficient number, since it is larger than the sum of its proper divisors (1468386867557).

11844440777851 is a wasteful number, since it uses less digits than its factorization.

11844440777851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92977422.

The product of its (nonzero) digits is 28098560, while the sum is 61.

The spelling of 11844440777851 in words is "eleven trillion, eight hundred forty-four billion, four hundred forty million, seven hundred seventy-seven thousand, eight hundred fifty-one".