680426787045 has 32 divisors (see below), whose sum is σ = 1145005507584. Its totient is φ = 344561817600.

The previous prime is 680426787037. The next prime is 680426787049. The reversal of 680426787045 is 540787624086.

680426787045 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 680426787045 - 2³ = 680426787037 is a prime.

It is a super-2 number, since 2×680426787045² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680426787049) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13779916 + ... + 13829205.

It is an arithmetic number, because the mean of its divisors is an integer number (35781422112).

Almost surely, 2^680426787045 is an apocalyptic number.

It is an amenable number.

680426787045 is a deficient number, since it is larger than the sum of its proper divisors (464578720539).

680426787045 is a wasteful number, since it uses less digits than its factorization.

680426787045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27609213.

The product of its (nonzero) digits is 18063360, while the sum is 57.

The spelling of 680426787045 in words is "six hundred eighty billion, four hundred twenty-six million, seven hundred eighty-seven thousand, forty-five".