99627552891 has 24 divisors (see below), whose sum is σ = 144993348864. Its totient is φ = 65917969200.

The previous prime is 99627552851. The next prime is 99627552907. The reversal of 99627552891 is 19825572699.

It is not a de Polignac number, because 99627552891 - 2³³ = 91037618299 is a prime.

It is not an unprimeable number, because it can be changed into a prime (99627552821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 921216 + ... + 1023666.

It is an arithmetic number, because the mean of its divisors is an integer number (6041389536).

Almost surely, 2^99627552891 is an apocalyptic number.

99627552891 is a deficient number, since it is larger than the sum of its proper divisors (45365795973).

99627552891 is a wasteful number, since it uses less digits than its factorization.

99627552891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103271 (or 103268 counting only the distinct ones).

The product of its digits is 24494400, while the sum is 63.

The spelling of 99627552891 in words is "ninety-nine billion, six hundred twenty-seven million, five hundred fifty-two thousand, eight hundred ninety-one".