41661463691 has 2 divisors, whose sum is σ = 41661463692. Its totient is φ = 41661463690.

The previous prime is 41661463663. The next prime is 41661463703. The reversal of 41661463691 is 19636416614.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 41661463691 - 2²⁶ = 41594354827 is a prime.

It is a super-2 number, since 2×41661463691² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (41661463601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20830731845 + 20830731846.

It is an arithmetic number, because the mean of its divisors is an integer number (20830731846).

Almost surely, 2^41661463691 is an apocalyptic number.

41661463691 is a deficient number, since it is larger than the sum of its proper divisors (1).

41661463691 is an equidigital number, since it uses as much as digits as its factorization.

41661463691 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 559872, while the sum is 47.

The spelling of 41661463691 in words is "forty-one billion, six hundred sixty-one million, four hundred sixty-three thousand, six hundred ninety-one".