10000199979 has 80 divisors (see below), whose sum is σ = 18738187776. Its totient is φ = 5163264000.

The previous prime is 10000199959. The next prime is 10000199983. The reversal of 10000199979 is 97999100001.

It is not a de Polignac number, because 10000199979 - 2¹³ = 10000191787 is a prime.

It is not an unprimeable number, because it can be changed into a prime (10000199959) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1036779 + ... + 1046379.

Almost surely, 2^10000199979 is an apocalyptic number.

10000199979 is a deficient number, since it is larger than the sum of its proper divisors (8737987797).

10000199979 is a wasteful number, since it uses less digits than its factorization.

10000199979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9798 (or 9789 counting only the distinct ones).

The product of its (nonzero) digits is 45927, while the sum is 45.

The spelling of 10000199979 in words is "ten billion, one hundred ninety-nine thousand, nine hundred seventy-nine".