51011343077 has 2 divisors, whose sum is σ = 51011343078. Its totient is φ = 51011343076.

The previous prime is 51011343073. The next prime is 51011343101. The reversal of 51011343077 is 77034311015.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50613300676 + 398042401 = 224974^2 + 19951^2 .

It is a cyclic number.

It is not a de Polignac number, because 51011343077 - 2² = 51011343073 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51011343073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25505671538 + 25505671539.

It is an arithmetic number, because the mean of its divisors is an integer number (25505671539).

Almost surely, 2^51011343077 is an apocalyptic number.

It is an amenable number.

51011343077 is a deficient number, since it is larger than the sum of its proper divisors (1).

51011343077 is an equidigital number, since it uses as much as digits as its factorization.

51011343077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8820, while the sum is 32.

The spelling of 51011343077 in words is "fifty-one billion, eleven million, three hundred forty-three thousand, seventy-seven".