1005550000001 has 8 divisors (see below), whose sum is σ = 1022695684800. Its totient is φ = 988407730800.

The previous prime is 1005549999967. The next prime is 1005550000043. The reversal of 1005550000001 is 1000000555001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1005550000001 is a prime.

It is a super-2 number, since 2×1005550000001² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1005550009001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 256550 + ... + 1441151.

It is an arithmetic number, because the mean of its divisors is an integer number (127836960600).

Almost surely, 2^{1005550000001} is an apocalyptic number.

It is an amenable number.

1005550000001 is a deficient number, since it is larger than the sum of its proper divisors (17145684799).

1005550000001 is a wasteful number, since it uses less digits than its factorization.

1005550000001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1707799.

The product of its (nonzero) digits is 125, while the sum is 17.

Adding to 1005550000001 its reverse (1000000555001), we get a palindrome (2005550555002).

The spelling of 1005550000001 in words is "one trillion, five billion, five hundred fifty million, one", and thus it is an aban number.