12064997881 has 12 divisors (see below), whose sum is σ = 12395160540. Its totient is φ = 11736637440.

The previous prime is 12064997843. The next prime is 12064997887. The reversal of 12064997881 is 18879946021.

It is a happy number.

12064997881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 520569856 + 11544428025 = 22816^2 + 107445^2 .

It is not a de Polignac number, because 12064997881 - 2⁷ = 12064997753 is a prime.

It is a super-2 number, since 2×12064997881² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12064997887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8562105 + ... + 8563513.

It is an arithmetic number, because the mean of its divisors is an integer number (1032930045).

Almost surely, 2^12064997881 is an apocalyptic number.

It is an amenable number.

12064997881 is a deficient number, since it is larger than the sum of its proper divisors (330162659).

12064997881 is an frugal number, since it uses more digits than its factorization.

12064997881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2364 (or 1907 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 55.

The spelling of 12064997881 in words is "twelve billion, sixty-four million, nine hundred ninety-seven thousand, eight hundred eighty-one".