1055505909105 has 12 divisors (see below), whose sum is σ = 1829543575860. Its totient is φ = 562936484832.

The previous prime is 1055505909089. The next prime is 1055505909127. The reversal of 1055505909105 is 5019095055501.

1055505909105 is a `hidden beast` number, since 1 + 0 + 5 + 5 + 50 + 590 + 9 + 1 + 0 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 167079015009 + 888426894096 = 408753^2 + 942564^2 .

It is not a de Polignac number, because 1055505909105 - 2⁴ = 1055505909089 is a prime.

It is a super-2 number, since 2×1055505909105² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 23455686869 = 1055505909105 / (1 + 0 + 5 + 5 + 5 + 0 + 5 + 9 + 0 + 9 + 1 + 0 + 5).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11727843390 + ... + 11727843479.

It is an arithmetic number, because the mean of its divisors is an integer number (152461964655).

Almost surely, 2^{1055505909105} is an apocalyptic number.

1055505909105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1055505909105 is a deficient number, since it is larger than the sum of its proper divisors (774037666755).

1055505909105 is a wasteful number, since it uses less digits than its factorization.

1055505909105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23455686880 (or 23455686877 counting only the distinct ones).

The product of its (nonzero) digits is 253125, while the sum is 45.

The spelling of 1055505909105 in words is "one trillion, fifty-five billion, five hundred five million, nine hundred nine thousand, one hundred five".