51534642751 has 2 divisors, whose sum is σ = 51534642752. Its totient is φ = 51534642750.

The previous prime is 51534642737. The next prime is 51534642851. The reversal of 51534642751 is 15724643515.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51534642751 - 2³³ = 42944708159 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51534642698 and 51534642707.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51534642701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25767321375 + 25767321376.

It is an arithmetic number, because the mean of its divisors is an integer number (25767321376).

Almost surely, 2^51534642751 is an apocalyptic number.

51534642751 is a deficient number, since it is larger than the sum of its proper divisors (1).

51534642751 is an equidigital number, since it uses as much as digits as its factorization.

51534642751 is an evil number, because the sum of its binary digits is even.

The product of its digits is 504000, while the sum is 43.

The spelling of 51534642751 in words is "fifty-one billion, five hundred thirty-four million, six hundred forty-two thousand, seven hundred fifty-one".