99999999950 has 24 divisors (see below), whose sum is σ = 192000002880. Its totient is φ = 38709676800.

The previous prime is 99999999947. The next prime is 99999999977. The reversal of 99999999950 is 5999999999.

It is a nialpdrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32256515 + ... + 32259614.

It is an arithmetic number, because the mean of its divisors is an integer number (8000000120).

Almost surely, 2^99999999950 is an apocalyptic number.

99999999950 is a deficient number, since it is larger than the sum of its proper divisors (92000002930).

99999999950 is a wasteful number, since it uses less digits than its factorization.

99999999950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64516172 (or 64516167 counting only the distinct ones).

The product of its (nonzero) digits is 1937102445, while the sum is 86.

The spelling of 99999999950 in words is "ninety-nine billion, nine hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred fifty".