498087321526261 has 2 divisors, whose sum is σ = 498087321526262. Its totient is φ = 498087321526260.

The previous prime is 498087321526189. The next prime is 498087321526283. The reversal of 498087321526261 is 162625123780894.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 449136043408900 + 48951278117361 = 21192830^2 + 6996519^2 .

It is a cyclic number.

It is not a de Polignac number, because 498087321526261 - 2²⁹ = 498086784655349 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 498087321526193 and 498087321526202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (498087321523261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249043660763130 + 249043660763131.

It is an arithmetic number, because the mean of its divisors is an integer number (249043660763131).

It is a 1-persistent number, because it is pandigital, but 2⋅498087321526261 = 996174643052522 is not.

Almost surely, 2^{498087321526261} is an apocalyptic number.

It is an amenable number.

498087321526261 is a deficient number, since it is larger than the sum of its proper divisors (1).

498087321526261 is an equidigital number, since it uses as much as digits as its factorization.

498087321526261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69672960, while the sum is 64.

The spelling of 498087321526261 in words is "four hundred ninety-eight trillion, eighty-seven billion, three hundred twenty-one million, five hundred twenty-six thousand, two hundred sixty-one".