11844947851 has 6 divisors (see below), whose sum is σ = 13019653556. Its totient is φ = 10768134300.

The previous prime is 11844947837. The next prime is 11844947879. The reversal of 11844947851 is 15874944811.

It is not a de Polignac number, because 11844947851 - 2¹⁷ = 11844816779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11844948851) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 48945945 + ... + 48946186.

Almost surely, 2^11844947851 is an apocalyptic number.

11844947851 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11844947851 is a deficient number, since it is larger than the sum of its proper divisors (1174705705).

11844947851 is an equidigital number, since it uses as much as digits as its factorization.

11844947851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97892153 (or 97892142 counting only the distinct ones).

The product of its digits is 1290240, while the sum is 52.

The spelling of 11844947851 in words is "eleven billion, eight hundred forty-four million, nine hundred forty-seven thousand, eight hundred fifty-one".