9999463129218 has 24 divisors (see below), whose sum is σ = 21667742689788. Its totient is φ = 3332809877472.

The previous prime is 9999463129217. The next prime is 9999463129231. The reversal of 9999463129218 is 8129213649999.

9999463129218 is a `hidden beast` number, since 9 + 9 + 9 + 94 + 6 + 312 + 9 + 218 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 9156028447449 + 843434681769 = 3025893^2 + 918387^2 .

It is not an unprimeable number, because it can be changed into a prime (9999463129217) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28529221 + ... + 28877592.

Almost surely, 2^{9999463129218} is an apocalyptic number.

9999463129218 is an abundant number, since it is smaller than the sum of its proper divisors (11668279560570).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9999463129218 is a wasteful number, since it uses less digits than its factorization.

9999463129218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57416498 (or 57416495 counting only the distinct ones).

The product of its digits is 136048896, while the sum is 72.

The spelling of 9999463129218 in words is "nine trillion, nine hundred ninety-nine billion, four hundred sixty-three million, one hundred twenty-nine thousand, two hundred eighteen".