999999999950 has 96 divisors (see below), whose sum is σ = 2158770621504. Its totient is φ = 337562173440.

The previous prime is 999999999937. The next prime is 999999999959. The reversal of 999999999950 is 59999999999.

It is a Curzon number.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999999999959) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6476042 + ... + 6628658.

It is an arithmetic number, because the mean of its divisors is an integer number (22487193974).

Almost surely, 2^999999999950 is an apocalyptic number.

999999999950 is an abundant number, since it is smaller than the sum of its proper divisors (1158770621554).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

999999999950 is a wasteful number, since it uses less digits than its factorization.

999999999950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152926 (or 152921 counting only the distinct ones).

The product of its (nonzero) digits is 17433922005, while the sum is 95.

The spelling of 999999999950 in words is "nine hundred ninety-nine billion, nine hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred fifty".