67876266449 has 2 divisors, whose sum is σ = 67876266450. Its totient is φ = 67876266448.

The previous prime is 67876266443. The next prime is 67876266467. The reversal of 67876266449 is 94466267876.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43915393600 + 23960872849 = 209560^2 + 154793^2 .

It is a cyclic number.

It is not a de Polignac number, because 67876266449 - 2⁴ = 67876266433 is a prime.

It is not a weakly prime, because it can be changed into another prime (67876266443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33938133224 + 33938133225.

It is an arithmetic number, because the mean of its divisors is an integer number (33938133225).

Almost surely, 2^67876266449 is an apocalyptic number.

It is an amenable number.

67876266449 is a deficient number, since it is larger than the sum of its proper divisors (1).

67876266449 is an equidigital number, since it uses as much as digits as its factorization.

67876266449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 146313216, while the sum is 65.

The spelling of 67876266449 in words is "sixty-seven billion, eight hundred seventy-six million, two hundred sixty-six thousand, four hundred forty-nine".