99999512363 has 4 divisors (see below), whose sum is σ = 103447771440. Its totient is φ = 96551253288.

The previous prime is 99999512357. The next prime is 99999512387. The reversal of 99999512363 is 36321599999.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36321599999 = 5647 ⋅6432017.

It is a cyclic number.

It is not a de Polignac number, because 99999512363 - 2²⁴ = 99982735147 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 99999512363.

It is not an unprimeable number, because it can be changed into a prime (99999512663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1724129495 + ... + 1724129552.

It is an arithmetic number, because the mean of its divisors is an integer number (25861942860).

Almost surely, 2^99999512363 is an apocalyptic number.

99999512363 is a deficient number, since it is larger than the sum of its proper divisors (3448259077).

99999512363 is a wasteful number, since it uses less digits than its factorization.

99999512363 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3448259076.

The product of its digits is 31886460, while the sum is 65.

The spelling of 99999512363 in words is "ninety-nine billion, nine hundred ninety-nine million, five hundred twelve thousand, three hundred sixty-three".