12114844781 has 16 divisors (see below), whose sum is σ = 13318830000. Its totient is φ = 10950551040.

The previous prime is 12114844757. The next prime is 12114844817. The reversal of 12114844781 is 18744841121.

It can be written as a sum of positive squares in 8 ways, for example, as 51337225 + 12063507556 = 7165^2 + 109834^2 .

It is a de Polignac number, because none of the positive numbers 2^k-12114844781 is a prime.

It is a super-2 number, since 2×12114844781² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12114844751) 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, 342095 + ... + 375843.

It is an arithmetic number, because the mean of its divisors is an integer number (832426875).

Almost surely, 2^12114844781 is an apocalyptic number.

It is an amenable number.

12114844781 is a deficient number, since it is larger than the sum of its proper divisors (1203985219).

12114844781 is a wasteful number, since it uses less digits than its factorization.

12114844781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34336.

The product of its digits is 57344, while the sum is 41.

The spelling of 12114844781 in words is "twelve billion, one hundred fourteen million, eight hundred forty-four thousand, seven hundred eighty-one".