71693811061 has 2 divisors, whose sum is σ = 71693811062. Its totient is φ = 71693811060.

The previous prime is 71693810977. The next prime is 71693811113. The reversal of 71693811061 is 16011839617.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71092090161 + 601720900 = 266631^2 + 24530^2 .

It is an emirp because it is prime and its reverse (16011839617) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71693811061 - 2⁹ = 71693810549 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 71693810999 and 71693811017.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71693814061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35846905530 + 35846905531.

It is an arithmetic number, because the mean of its divisors is an integer number (35846905531).

Almost surely, 2^71693811061 is an apocalyptic number.

It is an amenable number.

71693811061 is a deficient number, since it is larger than the sum of its proper divisors (1).

71693811061 is an equidigital number, since it uses as much as digits as its factorization.

71693811061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 43.

The spelling of 71693811061 in words is "seventy-one billion, six hundred ninety-three million, eight hundred eleven thousand, sixty-one".