51900357205589 has 2 divisors, whose sum is σ = 51900357205590. Its totient is φ = 51900357205588.

The previous prime is 51900357205519. The next prime is 51900357205667. The reversal of 51900357205589 is 98550275300915.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51667703400625 + 232653804964 = 7188025^2 + 482342^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51900357205589 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51900357205519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25950178602794 + 25950178602795.

It is an arithmetic number, because the mean of its divisors is an integer number (25950178602795).

Almost surely, 2^{51900357205589} is an apocalyptic number.

It is an amenable number.

51900357205589 is a deficient number, since it is larger than the sum of its proper divisors (1).

51900357205589 is an equidigital number, since it uses as much as digits as its factorization.

51900357205589 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17010000, while the sum is 59.

The spelling of 51900357205589 in words is "fifty-one trillion, nine hundred billion, three hundred fifty-seven million, two hundred five thousand, five hundred eighty-nine".