7673964068557 has 2 divisors, whose sum is σ = 7673964068558. Its totient is φ = 7673964068556.

The previous prime is 7673964068503. The next prime is 7673964068591. The reversal of 7673964068557 is 7558604693767.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4185907310601 + 3488056757956 = 2045949^2 + 1867634^2 .

It is an emirp because it is prime and its reverse (7558604693767) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7673964068557 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7673964068557.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7673964068257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3836982034278 + 3836982034279.

It is an arithmetic number, because the mean of its divisors is an integer number (3836982034279).

Almost surely, 2^{7673964068557} is an apocalyptic number.

It is an amenable number.

7673964068557 is a deficient number, since it is larger than the sum of its proper divisors (1).

7673964068557 is an equidigital number, since it uses as much as digits as its factorization.

7673964068557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1600300800, while the sum is 73.

The spelling of 7673964068557 in words is "seven trillion, six hundred seventy-three billion, nine hundred sixty-four million, sixty-eight thousand, five hundred fifty-seven".