1011061105555 has 4 divisors (see below), whose sum is σ = 1213273326672. Its totient is φ = 808848884440.

The previous prime is 1011061105529. The next prime is 1011061105583. The reversal of 1011061105555 is 5555011601101.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1011061105555 - 2⁷ = 1011061105427 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101106110551 + ... + 101106110560.

It is an arithmetic number, because the mean of its divisors is an integer number (303318331668).

Almost surely, 2^{1011061105555} is an apocalyptic number.

1011061105555 is a deficient number, since it is larger than the sum of its proper divisors (202212221117).

1011061105555 is an equidigital number, since it uses as much as digits as its factorization.

1011061105555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202212221116.

The product of its (nonzero) digits is 3750, while the sum is 31.

Adding to 1011061105555 its reverse (5555011601101), we get a palindrome (6566072706656).

The spelling of 1011061105555 in words is "one trillion, eleven billion, sixty-one million, one hundred five thousand, five hundred fifty-five".