41721739081 has 27 divisors (see below), whose sum is σ = 47465730669. Its totient is φ = 36644064600.

The previous prime is 41721739079. The next prime is 41721739097. The reversal of 41721739081 is 18093712714.

The square root of 41721739081 is 204259.

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

It is not a de Polignac number, because 41721739081 - 2¹ = 41721739079 is a prime.

It is a super-2 number, since 2×41721739081² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (41721739051) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 69652020 + ... + 69652618.

Almost surely, 2^41721739081 is an apocalyptic number.

41721739081 is the 204259-th square number.

41721739081 is the 102130-th centered octagonal number.

It is an amenable number.

41721739081 is a deficient number, since it is larger than the sum of its proper divisors (5743991588).

41721739081 is an frugal number, since it uses more digits than its factorization.

41721739081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1282 (or 641 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 43.

The spelling of 41721739081 in words is "forty-one billion, seven hundred twenty-one million, seven hundred thirty-nine thousand, eighty-one".