67122640553 has 2 divisors, whose sum is σ = 67122640554. Its totient is φ = 67122640552.

The previous prime is 67122640517. The next prime is 67122640631. The reversal of 67122640553 is 35504622176.

67122640553 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66756607129 + 366033424 = 258373^2 + 19132^2 .

It is a cyclic number.

It is not a de Polignac number, because 67122640553 - 2²⁸ = 66854205097 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 67122640553.

It is not a weakly prime, because it can be changed into another prime (67122640853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33561320276 + 33561320277.

It is an arithmetic number, because the mean of its divisors is an integer number (33561320277).

Almost surely, 2^67122640553 is an apocalyptic number.

It is an amenable number.

67122640553 is a deficient number, since it is larger than the sum of its proper divisors (1).

67122640553 is an equidigital number, since it uses as much as digits as its factorization.

67122640553 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 302400, while the sum is 41.

The spelling of 67122640553 in words is "sixty-seven billion, one hundred twenty-two million, six hundred forty thousand, five hundred fifty-three".