50197456489 has 2 divisors, whose sum is σ = 50197456490. Its totient is φ = 50197456488.

The previous prime is 50197456471. The next prime is 50197456493. The reversal of 50197456489 is 98465479105.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40113280089 + 10084176400 = 200283^2 + 100420^2 .

It is a cyclic number.

It is not a de Polignac number, because 50197456489 - 2⁹ = 50197455977 is a prime.

It is not a weakly prime, because it can be changed into another prime (50197456409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25098728244 + 25098728245.

It is an arithmetic number, because the mean of its divisors is an integer number (25098728245).

Almost surely, 2^50197456489 is an apocalyptic number.

It is an amenable number.

50197456489 is a deficient number, since it is larger than the sum of its proper divisors (1).

50197456489 is an equidigital number, since it uses as much as digits as its factorization.

50197456489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10886400, while the sum is 58.

The spelling of 50197456489 in words is "fifty billion, one hundred ninety-seven million, four hundred fifty-six thousand, four hundred eighty-nine".