51351531335369 has 2 divisors, whose sum is σ = 51351531335370. Its totient is φ = 51351531335368.

The previous prime is 51351531335359. The next prime is 51351531335407. The reversal of 51351531335369 is 96353313515315.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35986801210000 + 15364730125369 = 5998900^2 + 3919787^2 .

It is a cyclic number.

It is not a de Polignac number, because 51351531335369 - 2⁸ = 51351531335113 is a prime.

It is a super-2 number, since 2×51351531335369² (a number of 28 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 51351531335369.

It is not a weakly prime, because it can be changed into another prime (51351531335329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25675765667684 + 25675765667685.

It is an arithmetic number, because the mean of its divisors is an integer number (25675765667685).

Almost surely, 2^{51351531335369} is an apocalyptic number.

It is an amenable number.

51351531335369 is a deficient number, since it is larger than the sum of its proper divisors (1).

51351531335369 is an equidigital number, since it uses as much as digits as its factorization.

51351531335369 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8201250, while the sum is 53.

The spelling of 51351531335369 in words is "fifty-one trillion, three hundred fifty-one billion, five hundred thirty-one million, three hundred thirty-five thousand, three hundred sixty-nine".