672567719557 has 2 divisors, whose sum is σ = 672567719558. Its totient is φ = 672567719556.

The previous prime is 672567719543. The next prime is 672567719573. The reversal of 672567719557 is 755917765276.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 467946292356 + 204621427201 = 684066^2 + 452351^2 .

It is a cyclic number.

It is not a de Polignac number, because 672567719557 - 2²⁷ = 672433501829 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 672567719492 and 672567719501.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (672567719587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336283859778 + 336283859779.

It is an arithmetic number, because the mean of its divisors is an integer number (336283859779).

Almost surely, 2^672567719557 is an apocalyptic number.

It is an amenable number.

672567719557 is a deficient number, since it is larger than the sum of its proper divisors (1).

672567719557 is an equidigital number, since it uses as much as digits as its factorization.

672567719557 is an evil number, because the sum of its binary digits is even.

The product of its digits is 194481000, while the sum is 67.

The spelling of 672567719557 in words is "six hundred seventy-two billion, five hundred sixty-seven million, seven hundred nineteen thousand, five hundred fifty-seven".