1001000555055 has 12 divisors (see below), whose sum is σ = 1735067628840. Its totient is φ = 533866962672.

The previous prime is 1001000555053. The next prime is 1001000555059. The reversal of 1001000555055 is 5505550001001.

1001000555055 is a `hidden beast` number, since 1 + 0 + 0 + 100 + 0 + 5 + 550 + 5 + 5 = 666.

It is not a de Polignac number, because 1001000555055 - 2¹ = 1001000555053 is a prime.

It is a super-2 number, since 2×1001000555055² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001000555053) 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, 11122228345 + ... + 11122228434.

It is an arithmetic number, because the mean of its divisors is an integer number (144588969070).

Almost surely, 2^{1001000555055} is an apocalyptic number.

1001000555055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1001000555055 is a deficient number, since it is larger than the sum of its proper divisors (734067073785).

1001000555055 is a wasteful number, since it uses less digits than its factorization.

1001000555055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22244456790 (or 22244456787 counting only the distinct ones).

The product of its (nonzero) digits is 3125, while the sum is 27.

Adding to 1001000555055 its reverse (5505550001001), we get a palindrome (6506550556056).

The spelling of 1001000555055 in words is "one trillion, one billion, five hundred fifty-five thousand, fifty-five".