488854917781 has 4 divisors (see below), whose sum is σ = 514584124000. Its totient is φ = 463125711564.

The previous prime is 488854917709. The next prime is 488854917797. The reversal of 488854917781 is 187719458884.

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 488854917781 - 2⁹ = 488854917269 is a prime.

It is a super-2 number, since 2×488854917781² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 488854917781.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (488851917781) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12864603081 + ... + 12864603118.

It is an arithmetic number, because the mean of its divisors is an integer number (128646031000).

Almost surely, 2^488854917781 is an apocalyptic number.

It is an amenable number.

488854917781 is a deficient number, since it is larger than the sum of its proper divisors (25729206219).

488854917781 is a wasteful number, since it uses less digits than its factorization.

488854917781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25729206218.

The product of its digits is 144506880, while the sum is 70.

The spelling of 488854917781 in words is "four hundred eighty-eight billion, eight hundred fifty-four million, nine hundred seventeen thousand, seven hundred eighty-one".