51204365411389 has 2 divisors, whose sum is σ = 51204365411390. Its totient is φ = 51204365411388.

The previous prime is 51204365411383. The next prime is 51204365411473. The reversal of 51204365411389 is 98311456340215.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45202561191225 + 6001804220164 = 6723285^2 + 2449858^2 .

It is a cyclic number.

It is not a de Polignac number, because 51204365411389 - 2¹³ = 51204365403197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51204365411383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25602182705694 + 25602182705695.

It is an arithmetic number, because the mean of its divisors is an integer number (25602182705695).

Almost surely, 2^{51204365411389} is an apocalyptic number.

It is an amenable number.

51204365411389 is a deficient number, since it is larger than the sum of its proper divisors (1).

51204365411389 is an equidigital number, since it uses as much as digits as its factorization.

51204365411389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3110400, while the sum is 52.

The spelling of 51204365411389 in words is "fifty-one trillion, two hundred four billion, three hundred sixty-five million, four hundred eleven thousand, three hundred eighty-nine".