51465542651 has 2 divisors, whose sum is σ = 51465542652. Its totient is φ = 51465542650.

The previous prime is 51465542641. The next prime is 51465542719. The reversal of 51465542651 is 15624556415.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51465542651 - 2¹⁴ = 51465526267 is a prime.

It is not a weakly prime, because it can be changed into another prime (51465542621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25732771325 + 25732771326.

It is an arithmetic number, because the mean of its divisors is an integer number (25732771326).

Almost surely, 2^51465542651 is an apocalyptic number.

51465542651 is a deficient number, since it is larger than the sum of its proper divisors (1).

51465542651 is an equidigital number, since it uses as much as digits as its factorization.

51465542651 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 720000, while the sum is 44.

The spelling of 51465542651 in words is "fifty-one billion, four hundred sixty-five million, five hundred forty-two thousand, six hundred fifty-one".