1001099999950 has 24 divisors (see below), whose sum is σ = 1862076491352. Its totient is φ = 400433442720.

The previous prime is 1001099999891. The next prime is 1001099999951. The reversal of 1001099999950 is 599999901001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001099999951) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3934497 + ... + 4181203.

It is an arithmetic number, because the mean of its divisors is an integer number (77586520473).

Almost surely, 2^{1001099999950} is an apocalyptic number.

1001099999950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1001099999950 is a deficient number, since it is larger than the sum of its proper divisors (860976491402).

1001099999950 is a wasteful number, since it uses less digits than its factorization.

1001099999950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327876 (or 327871 counting only the distinct ones).

The product of its (nonzero) digits is 2657205, while the sum is 61.

The spelling of 1001099999950 in words is "one trillion, one billion, ninety-nine million, nine hundred ninety-nine thousand, nine hundred fifty".