12636721371004 has 12 divisors (see below), whose sum is σ = 22114287720000. Its totient is φ = 6318353451008.

The previous prime is 12636721370971. The next prime is 12636721371013. The reversal of 12636721371004 is 40017312763621.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4824597 + ... + 6967795.

It is an arithmetic number, because the mean of its divisors is an integer number (1842857310000).

Almost surely, 2^{12636721371004} is an apocalyptic number.

It is an amenable number.

12636721371004 is a deficient number, since it is larger than the sum of its proper divisors (9477566348996).

12636721371004 is a wasteful number, since it uses less digits than its factorization.

12636721371004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3617252 (or 3617250 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 43.

The spelling of 12636721371004 in words is "twelve trillion, six hundred thirty-six billion, seven hundred twenty-one million, three hundred seventy-one thousand, four".