12555956612 has 6 divisors (see below), whose sum is σ = 21972924078. Its totient is φ = 6277978304.

The previous prime is 12555956489. The next prime is 12555956627. The reversal of 12555956612 is 21665955521.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 11182216516 + 1373740096 = 105746^2 + 37064^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1569494573 + ... + 1569494580.

It is an arithmetic number, because the mean of its divisors is an integer number (3662154013).

Almost surely, 2^12555956612 is an apocalyptic number.

It is an amenable number.

12555956612 is a deficient number, since it is larger than the sum of its proper divisors (9416967466).

12555956612 is a wasteful number, since it uses less digits than its factorization.

12555956612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3138989157 (or 3138989155 counting only the distinct ones).

The product of its digits is 810000, while the sum is 47.

The spelling of 12555956612 in words is "twelve billion, five hundred fifty-five million, nine hundred fifty-six thousand, six hundred twelve".