498780061321 has 2 divisors, whose sum is σ = 498780061322. Its totient is φ = 498780061320.

The previous prime is 498780061229. The next prime is 498780061333. The reversal of 498780061321 is 123160087894.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 309346203721 + 189433857600 = 556189^2 + 435240^2 .

It is a cyclic number.

It is not a de Polignac number, because 498780061321 - 2¹⁵ = 498780028553 is a prime.

It is not a weakly prime, because it can be changed into another prime (498780062321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249390030660 + 249390030661.

It is an arithmetic number, because the mean of its divisors is an integer number (249390030661).

Almost surely, 2^498780061321 is an apocalyptic number.

It is an amenable number.

498780061321 is a deficient number, since it is larger than the sum of its proper divisors (1).

498780061321 is an equidigital number, since it uses as much as digits as its factorization.

498780061321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 580608, while the sum is 49.

The spelling of 498780061321 in words is "four hundred ninety-eight billion, seven hundred eighty million, sixty-one thousand, three hundred twenty-one".