12000077864 has 8 divisors (see below), whose sum is σ = 22500146010. Its totient is φ = 6000038928.

The previous prime is 12000077849. The next prime is 12000077911. The reversal of 12000077864 is 46877000021.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 11979302500 + 20775364 = 109450^2 + 4558^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 750004859 + ... + 750004874.

Almost surely, 2^12000077864 is an apocalyptic number.

It is an amenable number.

12000077864 is a deficient number, since it is larger than the sum of its proper divisors (10500068146).

12000077864 is a wasteful number, since it uses less digits than its factorization.

12000077864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1500009739 (or 1500009735 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 35.

Adding to 12000077864 its reverse (46877000021), we get a palindrome (58877077885).

The spelling of 12000077864 in words is "twelve billion, seventy-seven thousand, eight hundred sixty-four".