498250681921 has 4 divisors (see below), whose sum is σ = 519913755072. Its totient is φ = 476587608772.

The previous prime is 498250681891. The next prime is 498250681927. The reversal of 498250681921 is 129186052894.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 498250681921 - 2⁷ = 498250681793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (498250681927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10831536541 + ... + 10831536586.

It is an arithmetic number, because the mean of its divisors is an integer number (129978438768).

Almost surely, 2^498250681921 is an apocalyptic number.

It is an amenable number.

498250681921 is a deficient number, since it is larger than the sum of its proper divisors (21663073151).

498250681921 is a wasteful number, since it uses less digits than its factorization.

498250681921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21663073150.

The product of its (nonzero) digits is 2488320, while the sum is 55.

The spelling of 498250681921 in words is "four hundred ninety-eight billion, two hundred fifty million, six hundred eighty-one thousand, nine hundred twenty-one".