797859553880 has 16 divisors (see below), whose sum is σ = 1795183996320. Its totient is φ = 319143821536.

The previous prime is 797859553871. The next prime is 797859553927. The reversal of 797859553880 is 88355958797.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 797859553798 and 797859553807.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9973244384 + ... + 9973244463.

It is an arithmetic number, because the mean of its divisors is an integer number (112198999770).

Almost surely, 2^797859553880 is an apocalyptic number.

It is an amenable number.

797859553880 is an abundant number, since it is smaller than the sum of its proper divisors (997324442440).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

797859553880 is a wasteful number, since it uses less digits than its factorization.

797859553880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19946488858 (or 19946488854 counting only the distinct ones).

The product of its (nonzero) digits is 762048000, while the sum is 74.

The spelling of 797859553880 in words is "seven hundred ninety-seven billion, eight hundred fifty-nine million, five hundred fifty-three thousand, eight hundred eighty".