3261630540445 has 4 divisors (see below), whose sum is σ = 3913956648540. Its totient is φ = 2609304432352.

The previous prime is 3261630540373. The next prime is 3261630540499. The reversal of 3261630540445 is 5440450361623.

It is a happy number.

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 2451670139961 + 809960400484 = 1565781^2 + 899978^2 .

It is a cyclic number.

It is not a de Polignac number, because 3261630540445 - 2⁷ = 3261630540317 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 326163054040 + ... + 326163054049.

It is an arithmetic number, because the mean of its divisors is an integer number (978489162135).

Almost surely, 2^{3261630540445} is an apocalyptic number.

It is an amenable number.

3261630540445 is a deficient number, since it is larger than the sum of its proper divisors (652326108095).

3261630540445 is an equidigital number, since it uses as much as digits as its factorization.

3261630540445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 652326108094.

The product of its (nonzero) digits is 1036800, while the sum is 43.

The spelling of 3261630540445 in words is "three trillion, two hundred sixty-one billion, six hundred thirty million, five hundred forty thousand, four hundred forty-five".