1000999999950 has 96 divisors (see below), whose sum is σ = 2493987446016. Its totient is φ = 265697679360.

The previous prime is 1000999999943. The next prime is 1001000000017. The reversal of 1000999999950 is 599999990001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 50604462 + ... + 50624238.

It is an arithmetic number, because the mean of its divisors is an integer number (25979035896).

Almost surely, 2^{1000999999950} is an apocalyptic number.

1000999999950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1000999999950, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1246993723008).

1000999999950 is an abundant number, since it is smaller than the sum of its proper divisors (1492987446066).

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

1000999999950 is a wasteful number, since it uses less digits than its factorization.

1000999999950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21338 (or 21333 counting only the distinct ones).

The product of its (nonzero) digits is 23914845, while the sum is 69.

The spelling of 1000999999950 in words is "one trillion, nine hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred fifty".