1055561011005 has 32 divisors (see below), whose sum is σ = 1740095737344. Its totient is φ = 546111835136.

The previous prime is 1055561010929. The next prime is 1055561011013. The reversal of 1055561011005 is 5001101655501.

It is a cyclic number.

It is not a de Polignac number, because 1055561011005 - 2¹⁵ = 1055560978237 is a prime.

It is a super-2 number, since 2×1055561011005² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6545334 + ... + 6704663.

It is an arithmetic number, because the mean of its divisors is an integer number (54377991792).

Almost surely, 2^{1055561011005} is an apocalyptic number.

1055561011005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1055561011005 is a deficient number, since it is larger than the sum of its proper divisors (684534726339).

1055561011005 is a wasteful number, since it uses less digits than its factorization.

1055561011005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13250165.

The product of its (nonzero) digits is 3750, while the sum is 30.

Adding to 1055561011005 its reverse (5001101655501), we get a palindrome (6056662666506).

The spelling of 1055561011005 in words is "one trillion, fifty-five billion, five hundred sixty-one million, eleven thousand, five".