51764877469 has 2 divisors, whose sum is σ = 51764877470. Its totient is φ = 51764877468.

The previous prime is 51764877457. The next prime is 51764877487. The reversal of 51764877469 is 96477846715.

51764877469 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32099022244 + 19665855225 = 179162^2 + 140235^2 .

It is a cyclic number.

It is not a de Polignac number, because 51764877469 - 2⁹ = 51764876957 is a prime.

It is a super-2 number, since 2×51764877469² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51764877469.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51764877449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25882438734 + 25882438735.

It is an arithmetic number, because the mean of its divisors is an integer number (25882438735).

Almost surely, 2^51764877469 is an apocalyptic number.

It is an amenable number.

51764877469 is a deficient number, since it is larger than the sum of its proper divisors (1).

51764877469 is an equidigital number, since it uses as much as digits as its factorization.

51764877469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 71124480, while the sum is 64.

The spelling of 51764877469 in words is "fifty-one billion, seven hundred sixty-four million, eight hundred seventy-seven thousand, four hundred sixty-nine".