12011999464 has 32 divisors (see below), whose sum is σ = 22950930600. Its totient is φ = 5892261120.

The previous prime is 12011999459. The next prime is 12011999521. The reversal of 12011999464 is 46499911021.

12011999464 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 4 ways, for example, as 1900088100 + 10111911364 = 43590^2 + 100558^2 .

It is a super-2 number, since 2×12011999464² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 158194 + ... + 221470.

Almost surely, 2^12011999464 is an apocalyptic number.

It is an amenable number.

12011999464 is a deficient number, since it is larger than the sum of its proper divisors (10938931136).

12011999464 is a wasteful number, since it uses less digits than its factorization.

12011999464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63733 (or 63729 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 46.

The spelling of 12011999464 in words is "twelve billion, eleven million, nine hundred ninety-nine thousand, four hundred sixty-four".