9912465434438 has 32 divisors (see below), whose sum is σ = 17564561510400. Its totient is φ = 4105627454880.

The previous prime is 9912465434429. The next prime is 9912465434503. The reversal of 9912465434438 is 8344345642199.

It is a Harshad number since it is a multiple of its sum of digits (62).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15047513 + ... + 15692436.

It is an arithmetic number, because the mean of its divisors is an integer number (548892547200).

Almost surely, 2^{9912465434438} is an apocalyptic number.

9912465434438 is a deficient number, since it is larger than the sum of its proper divisors (7652096075962).

9912465434438 is a wasteful number, since it uses less digits than its factorization.

9912465434438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30740732.

The product of its digits is 89579520, while the sum is 62.

The spelling of 9912465434438 in words is "nine trillion, nine hundred twelve billion, four hundred sixty-five million, four hundred thirty-four thousand, four hundred thirty-eight".