1238664512012 has 6 divisors (see below), whose sum is σ = 2167662896028. Its totient is φ = 619332256004.

The previous prime is 1238664511951. The next prime is 1238664512021. The reversal of 1238664512012 is 2102154668321.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 154833063998 + ... + 154833064005.

It is an arithmetic number, because the mean of its divisors is an integer number (361277149338).

Almost surely, 2^{1238664512012} is an apocalyptic number.

It is an amenable number.

1238664512012 is a deficient number, since it is larger than the sum of its proper divisors (928998384016).

1238664512012 is a wasteful number, since it uses less digits than its factorization.

1238664512012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309666128007 (or 309666128005 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 41.

The spelling of 1238664512012 in words is "one trillion, two hundred thirty-eight billion, six hundred sixty-four million, five hundred twelve thousand, twelve".