99365533556399 has 16 divisors (see below), whose sum is σ = 114142945927680. Its totient is φ = 85548733522560.

The previous prime is 99365533556381. The next prime is 99365533556449.

99365533556399 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 99365533556399 - 2²⁴ = 99365516779183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99365533556899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80603354 + ... + 81826839.

It is an arithmetic number, because the mean of its divisors is an integer number (7133934120480).

Almost surely, 2^{99365533556399} is an apocalyptic number.

99365533556399 is a deficient number, since it is larger than the sum of its proper divisors (14777412371281).

99365533556399 is a wasteful number, since it uses less digits than its factorization.

99365533556399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162433150.

The product of its digits is 11957422500, while the sum is 80.

The spelling of 99365533556399 in words is "ninety-nine trillion, three hundred sixty-five billion, five hundred thirty-three million, five hundred fifty-six thousand, three hundred ninety-nine".