42611641366631 has 2 divisors, whose sum is σ = 42611641366632. Its totient is φ = 42611641366630.

The previous prime is 42611641366589. The next prime is 42611641366643. The reversal of 42611641366631 is 13666314611624.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42611641366631 is a prime.

It is a super-2 number, since 2×42611641366631² (a number of 28 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42611641366631.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42611641366031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21305820683315 + 21305820683316.

It is an arithmetic number, because the mean of its divisors is an integer number (21305820683316).

Almost surely, 2^{42611641366631} is an apocalyptic number.

42611641366631 is a deficient number, since it is larger than the sum of its proper divisors (1).

42611641366631 is an equidigital number, since it uses as much as digits as its factorization.

42611641366631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2239488, while the sum is 50.

The spelling of 42611641366631 in words is "forty-two trillion, six hundred eleven billion, six hundred forty-one million, three hundred sixty-six thousand, six hundred thirty-one".