67344690577 has 2 divisors, whose sum is σ = 67344690578. Its totient is φ = 67344690576.

The previous prime is 67344690559. The next prime is 67344690607. The reversal of 67344690577 is 77509644376.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53325893776 + 14018796801 = 230924^2 + 118401^2 .

It is a cyclic number.

It is not a de Polignac number, because 67344690577 - 2¹⁹ = 67344166289 is a prime.

It is not a weakly prime, because it can be changed into another prime (67344697577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33672345288 + 33672345289.

It is an arithmetic number, because the mean of its divisors is an integer number (33672345289).

Almost surely, 2^67344690577 is an apocalyptic number.

It is an amenable number.

67344690577 is a deficient number, since it is larger than the sum of its proper divisors (1).

67344690577 is an equidigital number, since it uses as much as digits as its factorization.

67344690577 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26671680, while the sum is 58.

The spelling of 67344690577 in words is "sixty-seven billion, three hundred forty-four million, six hundred ninety thousand, five hundred seventy-seven".