680393910550 has 24 divisors (see below), whose sum is σ = 1265589851976. Its totient is φ = 272145267840.

The previous prime is 680393910541. The next prime is 680393910563. The reversal of 680393910550 is 55019393086.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 680393910494 and 680393910503.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 853737 + ... + 1445563.

It is an arithmetic number, because the mean of its divisors is an integer number (52732910499).

Almost surely, 2^680393910550 is an apocalyptic number.

680393910550 is a deficient number, since it is larger than the sum of its proper divisors (585195941426).

680393910550 is a wasteful number, since it uses less digits than its factorization.

680393910550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 614832 (or 614827 counting only the distinct ones).

The product of its (nonzero) digits is 874800, while the sum is 49.

The spelling of 680393910550 in words is "six hundred eighty billion, three hundred ninety-three million, nine hundred ten thousand, five hundred fifty".