71950338749 has 2 divisors, whose sum is σ = 71950338750. Its totient is φ = 71950338748.

The previous prime is 71950338703. The next prime is 71950338851. The reversal of 71950338749 is 94783305917.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45078933124 + 26871405625 = 212318^2 + 163925^2 .

It is an emirp because it is prime and its reverse (94783305917) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71950338749 - 2³⁶ = 3230862013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 71950338694 and 71950338703.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71950332749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35975169374 + 35975169375.

It is an arithmetic number, because the mean of its divisors is an integer number (35975169375).

Almost surely, 2^71950338749 is an apocalyptic number.

It is an amenable number.

71950338749 is a deficient number, since it is larger than the sum of its proper divisors (1).

71950338749 is an equidigital number, since it uses as much as digits as its factorization.

71950338749 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5715360, while the sum is 56.

The spelling of 71950338749 in words is "seventy-one billion, nine hundred fifty million, three hundred thirty-eight thousand, seven hundred forty-nine".