41722631721 has 12 divisors (see below), whose sum is σ = 60268153348. Its totient is φ = 27814104864.

The previous prime is 41722631711. The next prime is 41722631747. The reversal of 41722631721 is 12713622714.

41722631721 is a `hidden beast` number, since 4 + 17 + 2 + 2 + 631 + 7 + 2 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 37861376400 + 3861255321 = 194580^2 + 62139^2 .

It is not a de Polignac number, because 41722631721 - 2¹³ = 41722623529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (41722631711) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 263631 + ... + 391083.

Almost surely, 2^41722631721 is an apocalyptic number.

It is an amenable number.

41722631721 is a deficient number, since it is larger than the sum of its proper divisors (18545521627).

41722631721 is a wasteful number, since it uses less digits than its factorization.

41722631721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163832 (or 163829 counting only the distinct ones).

The product of its digits is 28224, while the sum is 36.

The spelling of 41722631721 in words is "forty-one billion, seven hundred twenty-two million, six hundred thirty-one thousand, seven hundred twenty-one".