1005803055055 has 4 divisors (see below), whose sum is σ = 1206963666072. Its totient is φ = 804642444040.

The previous prime is 1005803055041. The next prime is 1005803055107. The reversal of 1005803055055 is 5505503085001.

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

It is a de Polignac number, because none of the positive numbers 2^k-1005803055055 is a prime.

It is a super-2 number, since 2×1005803055055² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent 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, 100580305501 + ... + 100580305510.

It is an arithmetic number, because the mean of its divisors is an integer number (301740916518).

Almost surely, 2^{1005803055055} is an apocalyptic number.

1005803055055 is a deficient number, since it is larger than the sum of its proper divisors (201160611017).

1005803055055 is an equidigital number, since it uses as much as digits as its factorization.

1005803055055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201160611016.

The product of its (nonzero) digits is 75000, while the sum is 37.

The spelling of 1005803055055 in words is "one trillion, five billion, eight hundred three million, fifty-five thousand, fifty-five".