680615161543 has 2 divisors, whose sum is σ = 680615161544. Its totient is φ = 680615161542.

The previous prime is 680615161537. The next prime is 680615161637. The reversal of 680615161543 is 345161516086.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-680615161543 is a prime.

It is a super-2 number, since 2×680615161543² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 680615161493 and 680615161502.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (680615161043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340307580771 + 340307580772.

It is an arithmetic number, because the mean of its divisors is an integer number (340307580772).

Almost surely, 2^680615161543 is an apocalyptic number.

680615161543 is a deficient number, since it is larger than the sum of its proper divisors (1).

680615161543 is an equidigital number, since it uses as much as digits as its factorization.

680615161543 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 518400, while the sum is 46.

The spelling of 680615161543 in words is "six hundred eighty billion, six hundred fifteen million, one hundred sixty-one thousand, five hundred forty-three".