9999749763200 has 72 divisors (see below), whose sum is σ = 24702948742215. Its totient is φ = 3999828352000.

The previous prime is 9999749763197. The next prime is 9999749763229. The reversal of 9999749763200 is 23679479999.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 5 ways, for example, as 8743754376256 + 1255995386944 = 2956984^2 + 1120712^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=2236040.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 178855250 + ... + 178911150.

Almost surely, 2^{9999749763200} is an apocalyptic number.

It is an amenable number.

9999749763200 is an abundant number, since it is smaller than the sum of its proper divisors (14703198979015).

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

9999749763200 is an frugal number, since it uses more digits than its factorization.

9999749763200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111826 (or 55908 counting only the distinct ones).

The product of its (nonzero) digits is 416649744, while the sum is 74.

The spelling of 9999749763200 in words is "nine trillion, nine hundred ninety-nine billion, seven hundred forty-nine million, seven hundred sixty-three thousand, two hundred".