51203544289 has 2 divisors, whose sum is σ = 51203544290. Its totient is φ = 51203544288.

The previous prime is 51203544229. The next prime is 51203544307. The reversal of 51203544289 is 98244530215.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34454784400 + 16748759889 = 185620^2 + 129417^2 .

It is a cyclic number.

It is not a de Polignac number, because 51203544289 - 2²¹ = 51201447137 is a prime.

It is not a weakly prime, because it can be changed into another prime (51203544229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25601772144 + 25601772145.

It is an arithmetic number, because the mean of its divisors is an integer number (25601772145).

Almost surely, 2^51203544289 is an apocalyptic number.

It is an amenable number.

51203544289 is a deficient number, since it is larger than the sum of its proper divisors (1).

51203544289 is an equidigital number, since it uses as much as digits as its factorization.

51203544289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 345600, while the sum is 43.

The spelling of 51203544289 in words is "fifty-one billion, two hundred three million, five hundred forty-four thousand, two hundred eighty-nine".