2005551443207 has 12 divisors (see below), whose sum is σ = 2171741578560. Its totient is φ = 1851235820928.

The previous prime is 2005551443197. The next prime is 2005551443221. The reversal of 2005551443207 is 7023441555002.

It is not a de Polignac number, because 2005551443207 - 2²⁴ = 2005534665991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2005551443227) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9114794 + ... + 9332232.

It is an arithmetic number, because the mean of its divisors is an integer number (180978464880).

Almost surely, 2^{2005551443207} is an apocalyptic number.

2005551443207 is a deficient number, since it is larger than the sum of its proper divisors (166190135353).

2005551443207 is a wasteful number, since it uses less digits than its factorization.

2005551443207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272042 (or 272029 counting only the distinct ones).

The product of its (nonzero) digits is 168000, while the sum is 38.

Adding to 2005551443207 its reverse (7023441555002), we get a palindrome (9028992998209).

The spelling of 2005551443207 in words is "two trillion, five billion, five hundred fifty-one million, four hundred forty-three thousand, two hundred seven".