51174490817 has 2 divisors, whose sum is σ = 51174490818. Its totient is φ = 51174490816.

The previous prime is 51174490813. The next prime is 51174490841. The reversal of 51174490817 is 71809447115.

51174490817 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45611717761 + 5562773056 = 213569^2 + 74584^2 .

It is a cyclic number.

It is not a de Polignac number, because 51174490817 - 2² = 51174490813 is a prime.

It is not a weakly prime, because it can be changed into another prime (51174490811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25587245408 + 25587245409.

It is an arithmetic number, because the mean of its divisors is an integer number (25587245409).

Almost surely, 2^51174490817 is an apocalyptic number.

It is an amenable number.

51174490817 is a deficient number, since it is larger than the sum of its proper divisors (1).

51174490817 is an equidigital number, since it uses as much as digits as its factorization.

51174490817 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 282240, while the sum is 47.

The spelling of 51174490817 in words is "fifty-one billion, one hundred seventy-four million, four hundred ninety thousand, eight hundred seventeen".