493669920481 has 4 divisors (see below), whose sum is σ = 493946798272. Its totient is φ = 493393042692.

The previous prime is 493669920407. The next prime is 493669920509. The reversal of 493669920481 is 184029966394.

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, and also an emirpimes, since its reverse is a distinct semiprime: 184029966394 = 2 ⋅92014983197.

It is a cyclic number.

It is not a de Polignac number, because 493669920481 - 2²¹ = 493667823329 is a prime.

It is a super-2 number, since 2×493669920481² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (493669927481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138436221 + ... + 138439786.

It is an arithmetic number, because the mean of its divisors is an integer number (123486699568).

Almost surely, 2^493669920481 is an apocalyptic number.

It is an amenable number.

493669920481 is a deficient number, since it is larger than the sum of its proper divisors (276877791).

493669920481 is a wasteful number, since it uses less digits than its factorization.

493669920481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276877790.

The product of its (nonzero) digits is 20155392, while the sum is 61.

The spelling of 493669920481 in words is "four hundred ninety-three billion, six hundred sixty-nine million, nine hundred twenty thousand, four hundred eighty-one".