9912553985 has 8 divisors (see below), whose sum is σ = 12090066216. Its totient is φ = 7800042240.

The previous prime is 9912553943. The next prime is 9912554023. The reversal of 9912553985 is 5893552199.

It can be written as a sum of positive squares in 4 ways, for example, as 349278721 + 9563275264 = 18689^2 + 97792^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 9912553985 - 2¹⁰ = 9912552961 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9912553985.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16249784 + ... + 16250393.

It is an arithmetic number, because the mean of its divisors is an integer number (1511258277).

Almost surely, 2^9912553985 is an apocalyptic number.

It is an amenable number.

9912553985 is a deficient number, since it is larger than the sum of its proper divisors (2177512231).

9912553985 is a wasteful number, since it uses less digits than its factorization.

9912553985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32500243.

The product of its digits is 4374000, while the sum is 56.

The square root of 9912553985 is about 99561.8098720589. The cubic root of 9912553985 is about 2148.1364045935.

The spelling of 9912553985 in words is "nine billion, nine hundred twelve million, five hundred fifty-three thousand, nine hundred eighty-five".