2631447627205 has 4 divisors (see below), whose sum is σ = 3157737152652. Its totient is φ = 2105158101760.

The previous prime is 2631447627197. The next prime is 2631447627287. The reversal of 2631447627205 is 5027267441362.

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

It can be written as a sum of positive squares in 2 ways, for example, as 562090574529 + 2069357052676 = 749727^2 + 1438526^2 .

It is not a de Polignac number, because 2631447627205 - 2³ = 2631447627197 is a prime.

It is a super-2 number, since 2×2631447627205² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 263144762716 + ... + 263144762725.

It is an arithmetic number, because the mean of its divisors is an integer number (789434288163).

Almost surely, 2^{2631447627205} is an apocalyptic number.

It is an amenable number.

2631447627205 is a deficient number, since it is larger than the sum of its proper divisors (526289525447).

2631447627205 is an equidigital number, since it uses as much as digits as its factorization.

2631447627205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526289525446.

The product of its (nonzero) digits is 3386880, while the sum is 49.

The spelling of 2631447627205 in words is "two trillion, six hundred thirty-one billion, four hundred forty-seven million, six hundred twenty-seven thousand, two hundred five".