9999957716001 has 96 divisors (see below), whose sum is σ = 16124880844800. Its totient is φ = 5921126956800.

The previous prime is 9999957715961. The next prime is 9999957716011. The reversal of 9999957716001 is 1006177599999.

It is a happy number.

9999957716001 is a `hidden beast` number, since 9 + 9 + 9 + 9 + 9 + 5 + 7 + 7 + 1 + 600 + 1 = 666.

9999957716001 is a nontrivial binomial coefficient, being equal to C(4472127, 2).

It is not a de Polignac number, because 9999957716001 - 2¹⁰ = 9999957714977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9999957716011) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 326449956 + ... + 326480586.

It is an arithmetic number, because the mean of its divisors is an integer number (167967508800).

Almost surely, 2^{9999957716001} is an apocalyptic number.

9999957716001 is the 4472126-th triangular number.

It is an amenable number.

9999957716001 is a deficient number, since it is larger than the sum of its proper divisors (6124923128799).

9999957716001 is a wasteful number, since it uses less digits than its factorization.

9999957716001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31147 (or 31144 counting only the distinct ones).

The product of its (nonzero) digits is 86802030, while the sum is 72.

The spelling of 9999957716001 in words is "nine trillion, nine hundred ninety-nine billion, nine hundred fifty-seven million, seven hundred sixteen thousand, one".