1055550055511 has 4 divisors (see below), whose sum is σ = 1206342920592. Its totient is φ = 904757190432.

The previous prime is 1055550055447. The next prime is 1055550055541. The reversal of 1055550055511 is 1155500555501.

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

It is a cyclic number.

It is not a de Polignac number, because 1055550055511 - 2⁶ = 1055550055447 is a prime.

It is a super-2 number, since 2×1055550055511² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1055550055541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75396432530 + ... + 75396432543.

It is an arithmetic number, because the mean of its divisors is an integer number (301585730148).

Almost surely, 2^{1055550055511} is an apocalyptic number.

1055550055511 is a deficient number, since it is larger than the sum of its proper divisors (150792865081).

1055550055511 is an equidigital number, since it uses as much as digits as its factorization.

1055550055511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150792865080.

The product of its (nonzero) digits is 78125, while the sum is 38.

The spelling of 1055550055511 in words is "one trillion, fifty-five billion, five hundred fifty million, fifty-five thousand, five hundred eleven".