1005555050055 has 96 divisors (see below), whose sum is σ = 1890409038336. Its totient is φ = 493099529472.

The previous prime is 1005555050051. The next prime is 1005555050069. The reversal of 1005555050055 is 5500505555001.

It is a happy number.

1005555050055 is a `hidden beast` number, since 1 + 0 + 0 + 5 + 5 + 550 + 50 + 0 + 55 = 666.

1005555050055 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1005555050055 - 2² = 1005555050051 is a prime.

It is a super-2 number, since 2×1005555050055² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1005555050051) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3020304 + ... + 3336666.

It is an arithmetic number, because the mean of its divisors is an integer number (19691760816).

Almost surely, 2^{1005555050055} is an apocalyptic number.

1005555050055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1005555050055 is a deficient number, since it is larger than the sum of its proper divisors (884853988281).

1005555050055 is a wasteful number, since it uses less digits than its factorization.

1005555050055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316517 (or 316514 counting only the distinct ones).

The product of its (nonzero) digits is 78125, while the sum is 36.

The spelling of 1005555050055 in words is "one trillion, five billion, five hundred fifty-five million, fifty thousand, fifty-five".