99100639889 has 2 divisors, whose sum is σ = 99100639890. Its totient is φ = 99100639888.

The previous prime is 99100639871. The next prime is 99100639903. The reversal of 99100639889 is 98893600199.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 98787633025 + 313006864 = 314305^2 + 17692^2 .

It is an emirp because it is prime and its reverse (98893600199) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99100639889 - 2⁸ = 99100639633 is a prime.

It is not a weakly prime, because it can be changed into another prime (99100609889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49550319944 + 49550319945.

It is an arithmetic number, because the mean of its divisors is an integer number (49550319945).

Almost surely, 2^99100639889 is an apocalyptic number.

It is an amenable number.

99100639889 is a deficient number, since it is larger than the sum of its proper divisors (1).

99100639889 is an equidigital number, since it uses as much as digits as its factorization.

99100639889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7558272, while the sum is 62.

The spelling of 99100639889 in words is "ninety-nine billion, one hundred million, six hundred thirty-nine thousand, eight hundred eighty-nine".