1011105509994 has 80 divisors (see below), whose sum is σ = 2340874162176. Its totient is φ = 325861250400.

The previous prime is 1011105509983. The next prime is 1011105510011. The reversal of 1011105509994 is 4999055011101.

It is a happy number.

1011105509994 is a `hidden beast` number, since 1 + 0 + 1 + 1 + 1 + 0 + 550 + 9 + 9 + 94 = 666.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 5366304 + ... + 5551524.

Almost surely, 2^{1011105509994} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1011105509994, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1170437081088).

1011105509994 is an abundant number, since it is smaller than the sum of its proper divisors (1329768652182).

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

1011105509994 is a wasteful number, since it uses less digits than its factorization.

1011105509994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186353 (or 186344 counting only the distinct ones).

The product of its (nonzero) digits is 72900, while the sum is 45.

The spelling of 1011105509994 in words is "one trillion, eleven billion, one hundred five million, five hundred nine thousand, nine hundred ninety-four".