1000111999950 has 72 divisors (see below), whose sum is σ = 3070820093328. Its totient is φ = 228597027840.

The previous prime is 1000111999949. The next prime is 1000111999993. The reversal of 1000111999950 is 599991110001.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 1000111999896 and 1000111999905.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 158744787 + ... + 158751086.

It is an arithmetic number, because the mean of its divisors is an integer number (42650279074).

Almost surely, 2^{1000111999950} is an apocalyptic number.

1000111999950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1000111999950 is an abundant number, since it is smaller than the sum of its proper divisors (2070708093378).

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

1000111999950 is a wasteful number, since it uses less digits than its factorization.

1000111999950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317495898 (or 317495890 counting only the distinct ones).

The product of its (nonzero) digits is 32805, while the sum is 45.

The spelling of 1000111999950 in words is "one trillion, one hundred eleven million, nine hundred ninety-nine thousand, nine hundred fifty".