1011005500000 has 84 divisors (see below), whose sum is σ = 2487990731436. Its totient is φ = 404402000000.

The previous prime is 1011005499859. The next prime is 1011005500007. The reversal of 1011005500000 is 55001101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011005500007) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 511006 + ... + 1511005.

It is an arithmetic number, because the mean of its divisors is an integer number (29618937279).

Almost surely, 2^{1011005500000} is an apocalyptic number.

1011005500000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1011005500000 is an abundant number, since it is smaller than the sum of its proper divisors (1476985231436).

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

1011005500000 is an frugal number, since it uses more digits than its factorization.

1011005500000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2022051 (or 2022018 counting only the distinct ones).

The product of its (nonzero) digits is 25, while the sum is 13.

The spelling of 1011005500000 in words is "one trillion, eleven billion, five million, five hundred thousand".