99638624276 has 12 divisors (see below), whose sum is σ = 174370949172. Its totient is φ = 49818353088.

The previous prime is 99638624269. The next prime is 99638624321. The reversal of 99638624276 is 67242683699.

It can be written as a sum of positive squares in 2 ways, for example, as 53765551876 + 45873072400 = 231874^2 + 214180^2 .

It is a super-2 number, since 2×99638624276² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26966 + ... + 447218.

It is an arithmetic number, because the mean of its divisors is an integer number (14530912431).

Almost surely, 2^99638624276 is an apocalyptic number.

It is an amenable number.

99638624276 is a deficient number, since it is larger than the sum of its proper divisors (74732324896).

99638624276 is a wasteful number, since it uses less digits than its factorization.

99638624276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479530 (or 479528 counting only the distinct ones).

The product of its digits is 47029248, while the sum is 62.

The spelling of 99638624276 in words is "ninety-nine billion, six hundred thirty-eight million, six hundred twenty-four thousand, two hundred seventy-six".