71783684741 has 2 divisors, whose sum is σ = 71783684742. Its totient is φ = 71783684740.

The previous prime is 71783684701. The next prime is 71783684803. The reversal of 71783684741 is 14748638717.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71347752100 + 435932641 = 267110^2 + 20879^2 .

It is a cyclic number.

It is not a de Polignac number, because 71783684741 - 2²² = 71779490437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71783684701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35891842370 + 35891842371.

It is an arithmetic number, because the mean of its divisors is an integer number (35891842371).

Almost surely, 2^71783684741 is an apocalyptic number.

It is an amenable number.

71783684741 is a deficient number, since it is larger than the sum of its proper divisors (1).

71783684741 is an equidigital number, since it uses as much as digits as its factorization.

71783684741 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6322176, while the sum is 56.

The spelling of 71783684741 in words is "seventy-one billion, seven hundred eighty-three million, six hundred eighty-four thousand, seven hundred forty-one".