16239521964008 has 48 divisors (see below), whose sum is σ = 35481773561220. Its totient is φ = 6947732994048.

The previous prime is 16239521963893. The next prime is 16239521964013. The reversal of 16239521964008 is 80046912593261.

It can be written as a sum of positive squares in 2 ways, for example, as 12784615011364 + 3454906952644 = 3575558^2 + 1858738^2 .

It is a Harshad number since it is a multiple of its sum of digits (56).

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 11 ways as a sum of consecutive naturals, for example, 35672735 + ... + 36125102.

Almost surely, 2^{16239521964008} is an apocalyptic number.

It is an amenable number.

16239521964008 is an abundant number, since it is smaller than the sum of its proper divisors (19242251597212).

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

16239521964008 is a wasteful number, since it uses less digits than its factorization.

16239521964008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71798434 (or 71798423 counting only the distinct ones).

The product of its (nonzero) digits is 5598720, while the sum is 56.

The spelling of 16239521964008 in words is "sixteen trillion, two hundred thirty-nine billion, five hundred twenty-one million, nine hundred sixty-four thousand, eight".