51076922693 has 2 divisors, whose sum is σ = 51076922694. Its totient is φ = 51076922692.

The previous prime is 51076922681. The next prime is 51076922717. The reversal of 51076922693 is 39622967015.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50130314404 + 946608289 = 223898^2 + 30767^2 .

It is a cyclic number.

It is not a de Polignac number, because 51076922693 - 2²⁸ = 50808487237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51076922593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25538461346 + 25538461347.

It is an arithmetic number, because the mean of its divisors is an integer number (25538461347).

Almost surely, 2^51076922693 is an apocalyptic number.

It is an amenable number.

51076922693 is a deficient number, since it is larger than the sum of its proper divisors (1).

51076922693 is an equidigital number, since it uses as much as digits as its factorization.

51076922693 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1224720, while the sum is 50.

The spelling of 51076922693 in words is "fifty-one billion, seventy-six million, nine hundred twenty-two thousand, six hundred ninety-three".