9906550556099 has 8 divisors (see below), whose sum is σ = 10014270140160. Its totient is φ = 9799317291400.

The previous prime is 9906550556093. The next prime is 9906550556107.

It is a happy number.

9906550556099 is nontrivially palindromic in base 10.

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

It is a cyclic number.

It is not a de Polignac number, because 9906550556099 - 2¹⁶ = 9906550490563 is a prime.

It is a super-2 number, since 2×9906550556099² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9906550556093) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121538879 + ... + 121620360.

It is an arithmetic number, because the mean of its divisors is an integer number (1251783767520).

Almost surely, 2^{9906550556099} is an apocalyptic number.

9906550556099 is a deficient number, since it is larger than the sum of its proper divisors (107719584061).

9906550556099 is a wasteful number, since it uses less digits than its factorization.

9906550556099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243159681.

The product of its (nonzero) digits is 147622500, while the sum is 68.

The spelling of 9906550556099 in words is "nine trillion, nine hundred six billion, five hundred fifty million, five hundred fifty-six thousand, ninety-nine".