1011009999990 has 64 divisors (see below), whose sum is σ = 2580675987456. Its totient is φ = 252605793792.

The previous prime is 1011009999917. The next prime is 1011009999991. The reversal of 1011009999990 is 999999001101.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1011009999990.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011009999991) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4331052 + ... + 4558511.

It is an arithmetic number, because the mean of its divisors is an integer number (40323062304).

Almost surely, 2^{1011009999990} is an apocalyptic number.

1011009999990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1011009999990 is an abundant number, since it is smaller than the sum of its proper divisors (1569665987466).

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

1011009999990 is a wasteful number, since it uses less digits than its factorization.

1011009999990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8889813.

The product of its (nonzero) digits is 531441, while the sum is 57.

The spelling of 1011009999990 in words is "one trillion, eleven billion, nine million, nine hundred ninety-nine thousand, nine hundred ninety".