21760541631 has 6 divisors (see below), whose sum is σ = 31431893480. Its totient is φ = 14507027748.

The previous prime is 21760541629. The next prime is 21760541641. The reversal of 21760541631 is 13614506712.

21760541631 is a `hidden beast` number, since 2 + 1 + 7 + 605 + 4 + 16 + 31 = 666.

It is not a de Polignac number, because 21760541631 - 2¹ = 21760541629 is a prime.

It is a super-2 number, since 2×21760541631² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21760541641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1208918971 + ... + 1208918988.

Almost surely, 2^21760541631 is an apocalyptic number.

21760541631 is a deficient number, since it is larger than the sum of its proper divisors (9671351849).

21760541631 is a wasteful number, since it uses less digits than its factorization.

21760541631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2417837965 (or 2417837962 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

It can be divided in two parts, 21760 and 541631, that added together give a triangular number (563391 = T₁₀₆₁).

The spelling of 21760541631 in words is "twenty-one billion, seven hundred sixty million, five hundred forty-one thousand, six hundred thirty-one".