9917135814512 has 10 divisors (see below), whose sum is σ = 19214450640648. Its totient is φ = 4958567907248.

The previous prime is 9917135814451. The next prime is 9917135814527. The reversal of 9917135814512 is 2154185317199.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 309910494188 + ... + 309910494219.

Almost surely, 2^{9917135814512} is an apocalyptic number.

It is an amenable number.

9917135814512 is a deficient number, since it is larger than the sum of its proper divisors (9297314826136).

9917135814512 is a wasteful number, since it uses less digits than its factorization.

9917135814512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 619820988415 (or 619820988409 counting only the distinct ones).

The product of its digits is 2721600, while the sum is 56.

The spelling of 9917135814512 in words is "nine trillion, nine hundred seventeen billion, one hundred thirty-five million, eight hundred fourteen thousand, five hundred twelve".