99365456399 has 12 divisors (see below), whose sum is σ = 115644583152. Its totient is φ = 85018570560.

The previous prime is 99365456383. The next prime is 99365456413.

99365456399 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 99365456399 - 2⁴ = 99365456383 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 (99365456899) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24150947 + ... + 24155060.

It is an arithmetic number, because the mean of its divisors is an integer number (9637048596).

Almost surely, 2^99365456399 is an apocalyptic number.

99365456399 is a deficient number, since it is larger than the sum of its proper divisors (16279126753).

99365456399 is a wasteful number, since it uses less digits than its factorization.

99365456399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48306046 (or 48306035 counting only the distinct ones).

The product of its digits is 212576400, while the sum is 68.

The spelling of 99365456399 in words is "ninety-nine billion, three hundred sixty-five million, four hundred fifty-six thousand, three hundred ninety-nine".