1055105105109 has 16 divisors (see below), whose sum is σ = 1534748904000. Its totient is φ = 639436568960.

The previous prime is 1055105105107. The next prime is 1055105105123. The reversal of 1055105105109 is 9015015015501.

It is a cyclic number.

It is not a de Polignac number, because 1055105105109 - 2¹ = 1055105105107 is a prime.

It is a super-2 number, since 2×1055105105109² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a self number, because there is not a number n which added to its sum of digits gives 1055105105109.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1055105105107) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 521017 + ... + 1543265.

It is an arithmetic number, because the mean of its divisors is an integer number (95921806500).

Almost surely, 2^{1055105105109} is an apocalyptic number.

It is an amenable number.

1055105105109 is a deficient number, since it is larger than the sum of its proper divisors (479643798891).

1055105105109 is a wasteful number, since it uses less digits than its factorization.

1055105105109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1053540.

The product of its (nonzero) digits is 5625, while the sum is 33.

The spelling of 1055105105109 in words is "one trillion, fifty-five billion, one hundred five million, one hundred five thousand, one hundred nine".