51266055719 has 2 divisors, whose sum is σ = 51266055720. Its totient is φ = 51266055718.

The previous prime is 51266055707. The next prime is 51266055739. The reversal of 51266055719 is 91755066215.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51266055719 is a prime.

It is a super-2 number, since 2×51266055719² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51266055739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25633027859 + 25633027860.

It is an arithmetic number, because the mean of its divisors is an integer number (25633027860).

Almost surely, 2^51266055719 is an apocalyptic number.

51266055719 is a deficient number, since it is larger than the sum of its proper divisors (1).

51266055719 is an equidigital number, since it uses as much as digits as its factorization.

51266055719 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 567000, while the sum is 47.

The spelling of 51266055719 in words is "fifty-one billion, two hundred sixty-six million, fifty-five thousand, seven hundred nineteen".