21763751741 has 2 divisors, whose sum is σ = 21763751742. Its totient is φ = 21763751740.

The previous prime is 21763751731. The next prime is 21763751753. The reversal of 21763751741 is 14715736712.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21760675225 + 3076516 = 147515^2 + 1754^2 .

It is a cyclic number.

It is not a de Polignac number, because 21763751741 - 2¹⁰ = 21763750717 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21763751692 and 21763751701.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21763751701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10881875870 + 10881875871.

It is an arithmetic number, because the mean of its divisors is an integer number (10881875871).

Almost surely, 2^21763751741 is an apocalyptic number.

It is an amenable number.

21763751741 is a deficient number, since it is larger than the sum of its proper divisors (1).

21763751741 is an equidigital number, since it uses as much as digits as its factorization.

21763751741 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 246960, while the sum is 44.

The spelling of 21763751741 in words is "twenty-one billion, seven hundred sixty-three million, seven hundred fifty-one thousand, seven hundred forty-one".