99287278299 has 72 divisors (see below), whose sum is σ = 162930558336. Its totient is φ = 58158777600.

The previous prime is 99287278291. The next prime is 99287278309.

99287278299 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 99287278299 - 2³ = 99287278291 is a prime.

It is not an unprimeable number, because it can be changed into a prime (99287278291) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 37707487 + ... + 37710119.

Almost surely, 2^99287278299 is an apocalyptic number.

99287278299 is a gapful number since it is divisible by the number (99) formed by its first and last digit.

99287278299 is a deficient number, since it is larger than the sum of its proper divisors (63643280037).

99287278299 is a wasteful number, since it uses less digits than its factorization.

99287278299 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3809 (or 3795 counting only the distinct ones).

The product of its digits is 164602368, while the sum is 72.

The spelling of 99287278299 in words is "ninety-nine billion, two hundred eighty-seven million, two hundred seventy-eight thousand, two hundred ninety-nine".