10099979999 has 2 divisors, whose sum is σ = 10099980000. Its totient is φ = 10099979998.

The previous prime is 10099979987. The next prime is 10099980001. The reversal of 10099979999 is 99997999001.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 10099979999 - 2⁴ = 10099979983 is a prime.

Together with 10099980001, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10099979299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5049989999 + 5049990000.

It is an arithmetic number, because the mean of its divisors is an integer number (5049990000).

Almost surely, 2^10099979999 is an apocalyptic number.

10099979999 is a deficient number, since it is larger than the sum of its proper divisors (1).

10099979999 is an equidigital number, since it uses as much as digits as its factorization.

10099979999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 33480783, while the sum is 71.

The spelling of 10099979999 in words is "ten billion, ninety-nine million, nine hundred seventy-nine thousand, nine hundred ninety-nine".