6641233052461 has 4 divisors (see below), whose sum is σ = 7589980631392. Its totient is φ = 5692485473532.

The previous prime is 6641233052459. The next prime is 6641233052491. The reversal of 6641233052461 is 1642503321466.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6641233052461 - 2¹ = 6641233052459 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 (6641233052491) by changing a digit.

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, 474373789455 + ... + 474373789468.

It is an arithmetic number, because the mean of its divisors is an integer number (1897495157848).

Almost surely, 2^{6641233052461} is an apocalyptic number.

It is an amenable number.

6641233052461 is a deficient number, since it is larger than the sum of its proper divisors (948747578931).

6641233052461 is an equidigital number, since it uses as much as digits as its factorization.

6641233052461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 948747578930.

The product of its (nonzero) digits is 622080, while the sum is 43.

The spelling of 6641233052461 in words is "six trillion, six hundred forty-one billion, two hundred thirty-three million, fifty-two thousand, four hundred sixty-one".