6241561666431 has 48 divisors (see below), whose sum is σ = 10483709040000. Its totient is φ = 3273859657152.

The previous prime is 6241561666421. The next prime is 6241561666507. The reversal of 6241561666431 is 1346661651426.

It is not a de Polignac number, because 6241561666431 - 2¹⁰ = 6241561665407 is a prime.

It is a super-2 number, since 2×6241561666431² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6241561666421) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8781181 + ... + 9465318.

It is an arithmetic number, because the mean of its divisors is an integer number (218410605000).

Almost surely, 2^{6241561666431} is an apocalyptic number.

6241561666431 is a deficient number, since it is larger than the sum of its proper divisors (4242147373569).

6241561666431 is a wasteful number, since it uses less digits than its factorization.

6241561666431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18246708 (or 18246701 counting only the distinct ones).

The product of its digits is 3732480, while the sum is 51.

The spelling of 6241561666431 in words is "six trillion, two hundred forty-one billion, five hundred sixty-one million, six hundred sixty-six thousand, four hundred thirty-one".