99431027267 has 12 divisors (see below), whose sum is σ = 117699030960. Its totient is φ = 83438622960.

The previous prime is 99431027251. The next prime is 99431027273. The reversal of 99431027267 is 76272013499.

It is not a de Polignac number, because 99431027267 - 2⁴ = 99431027251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99431027207) 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, 31603967 + ... + 31607112.

It is an arithmetic number, because the mean of its divisors is an integer number (9808252580).

Almost surely, 2^99431027267 is an apocalyptic number.

99431027267 is a deficient number, since it is larger than the sum of its proper divisors (18268003693).

99431027267 is a wasteful number, since it uses less digits than its factorization.

99431027267 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63211114 (or 63211103 counting only the distinct ones).

The product of its (nonzero) digits is 1143072, while the sum is 50.

The spelling of 99431027267 in words is "ninety-nine billion, four hundred thirty-one million, twenty-seven thousand, two hundred sixty-seven".