673845265507 has 2 divisors, whose sum is σ = 673845265508. Its totient is φ = 673845265506.

The previous prime is 673845265469. The next prime is 673845265609. The reversal of 673845265507 is 705562548376.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-673845265507 is a prime.

It is not a weakly prime, because it can be changed into another prime (673845205507) by changing a digit.

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 as a sum of consecutive naturals, namely, 336922632753 + 336922632754.

It is an arithmetic number, because the mean of its divisors is an integer number (336922632754).

Almost surely, 2^673845265507 is an apocalyptic number.

673845265507 is a deficient number, since it is larger than the sum of its proper divisors (1).

673845265507 is an equidigital number, since it uses as much as digits as its factorization.

673845265507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42336000, while the sum is 58.

The spelling of 673845265507 in words is "six hundred seventy-three billion, eight hundred forty-five million, two hundred sixty-five thousand, five hundred seven".