99138527208 has 64 divisors (see below), whose sum is σ = 314725488000. Its totient is φ = 28325293056.

The previous prime is 99138527203. The next prime is 99138527231. The reversal of 99138527208 is 80272583199.

99138527208 is a `hidden beast` number, since 9 + 91 + 3 + 8 + 527 + 20 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (99138527203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32782393 + ... + 32785416.

It is an arithmetic number, because the mean of its divisors is an integer number (4917585750).

Almost surely, 2^99138527208 is an apocalyptic number.

It is an amenable number.

99138527208 is an abundant number, since it is smaller than the sum of its proper divisors (215586960792).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

99138527208 is a wasteful number, since it uses less digits than its factorization.

99138527208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65567831 (or 65567821 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 54.

The spelling of 99138527208 in words is "ninety-nine billion, one hundred thirty-eight million, five hundred twenty-seven thousand, two hundred eight".