667245653743 has 2 divisors, whose sum is σ = 667245653744. Its totient is φ = 667245653742.

The previous prime is 667245653579. The next prime is 667245653783. The reversal of 667245653743 is 347356542766.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 667245653743 - 2¹³ = 667245645551 is a prime.

It is a super-3 number, since 3×667245653743³ (a number of 36 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (667245653783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333622826871 + 333622826872.

It is an arithmetic number, because the mean of its divisors is an integer number (333622826872).

Almost surely, 2^667245653743 is an apocalyptic number.

667245653743 is a deficient number, since it is larger than the sum of its proper divisors (1).

667245653743 is an equidigital number, since it uses as much as digits as its factorization.

667245653743 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 76204800, while the sum is 58.

The spelling of 667245653743 in words is "six hundred sixty-seven billion, two hundred forty-five million, six hundred fifty-three thousand, seven hundred forty-three".