41716261621 has 2 divisors, whose sum is σ = 41716261622. Its totient is φ = 41716261620.

The previous prime is 41716261541. The next prime is 41716261687. The reversal of 41716261621 is 12616261714.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22353539121 + 19362722500 = 149511^2 + 139150^2 .

It is a cyclic number.

It is not a de Polignac number, because 41716261621 - 2⁷ = 41716261493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (41716261421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20858130810 + 20858130811.

It is an arithmetic number, because the mean of its divisors is an integer number (20858130811).

Almost surely, 2^41716261621 is an apocalyptic number.

It is an amenable number.

41716261621 is a deficient number, since it is larger than the sum of its proper divisors (1).

41716261621 is an equidigital number, since it uses as much as digits as its factorization.

41716261621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 37.

The spelling of 41716261621 in words is "forty-one billion, seven hundred sixteen million, two hundred sixty-one thousand, six hundred twenty-one".