71886988741 has 2 divisors, whose sum is σ = 71886988742. Its totient is φ = 71886988740.

The previous prime is 71886988721. The next prime is 71886988843. The reversal of 71886988741 is 14788968817.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70355440516 + 1531548225 = 265246^2 + 39135^2 .

It is a cyclic number.

It is not a de Polignac number, because 71886988741 - 2¹¹ = 71886986693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71886988721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35943494370 + 35943494371.

It is an arithmetic number, because the mean of its divisors is an integer number (35943494371).

Almost surely, 2^71886988741 is an apocalyptic number.

It is an amenable number.

71886988741 is a deficient number, since it is larger than the sum of its proper divisors (1).

71886988741 is an equidigital number, since it uses as much as digits as its factorization.

71886988741 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43352064, while the sum is 67.

The spelling of 71886988741 in words is "seventy-one billion, eight hundred eighty-six million, nine hundred eighty-eight thousand, seven hundred forty-one".