672665616547 has 2 divisors, whose sum is σ = 672665616548. Its totient is φ = 672665616546.

The previous prime is 672665616541. The next prime is 672665616589. The reversal of 672665616547 is 745616566276.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 672665616547 - 2¹¹ = 672665614499 is a prime.

It is not a weakly prime, because it can be changed into another prime (672665616541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336332808273 + 336332808274.

It is an arithmetic number, because the mean of its divisors is an integer number (336332808274).

Almost surely, 2^672665616547 is an apocalyptic number.

672665616547 is a deficient number, since it is larger than the sum of its proper divisors (1).

672665616547 is an equidigital number, since it uses as much as digits as its factorization.

672665616547 is an evil number, because the sum of its binary digits is even.

The product of its digits is 76204800, while the sum is 61.

The spelling of 672665616547 in words is "six hundred seventy-two billion, six hundred sixty-five million, six hundred sixteen thousand, five hundred forty-seven".