680557552563 has 16 divisors (see below), whose sum is σ = 1040895256320. Its totient is φ = 387444338976.

The previous prime is 680557552559. The next prime is 680557552573. The reversal of 680557552563 is 365255755086.

680557552563 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 680557552563 - 2² = 680557552559 is a prime.

It is not an unprimeable number, because it can be changed into a prime (680557552523) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60231345 + ... + 60242642.

It is an arithmetic number, because the mean of its divisors is an integer number (65055953520).

Almost surely, 2^680557552563 is an apocalyptic number.

680557552563 is a deficient number, since it is larger than the sum of its proper divisors (360337703757).

680557552563 is a wasteful number, since it uses less digits than its factorization.

680557552563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120474266.

The product of its (nonzero) digits is 37800000, while the sum is 57.

The spelling of 680557552563 in words is "six hundred eighty billion, five hundred fifty-seven million, five hundred fifty-two thousand, five hundred sixty-three".