41897586721 has 9 divisors (see below), whose sum is σ = 42451033233. Its totient is φ = 41351271780.

The previous prime is 41897586707. The next prime is 41897586779. The reversal of 41897586721 is 12768579814.

The square root of 41897586721 is 204689.

It is a perfect power (a square), and thus also a powerful number.

It is a de Polignac number, because none of the positive numbers 2^k-41897586721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (41897586781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 16169136 + ... + 16171726.

Almost surely, 2^41897586721 is an apocalyptic number.

41897586721 is the 204689-th square number.

41897586721 is the 102345-th centered octagonal number.

It is an amenable number.

41897586721 is a deficient number, since it is larger than the sum of its proper divisors (553446512).

41897586721 is an frugal number, since it uses more digits than its factorization.

41897586721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5340 (or 2670 counting only the distinct ones).

The product of its digits is 6773760, while the sum is 58.

The spelling of 41897586721 in words is "forty-one billion, eight hundred ninety-seven million, five hundred eighty-six thousand, seven hundred twenty-one".