64077667919 has 2 divisors, whose sum is σ = 64077667920. Its totient is φ = 64077667918.

The previous prime is 64077667891. The next prime is 64077667937. The reversal of 64077667919 is 91976677046.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64077667919 is a prime.

It is a super-2 number, since 2×64077667919² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64077667519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32038833959 + 32038833960.

It is an arithmetic number, because the mean of its divisors is an integer number (32038833960).

Almost surely, 2^64077667919 is an apocalyptic number.

64077667919 is a deficient number, since it is larger than the sum of its proper divisors (1).

64077667919 is an equidigital number, since it uses as much as digits as its factorization.

64077667919 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24004512, while the sum is 62.

The spelling of 64077667919 in words is "sixty-four billion, seventy-seven million, six hundred sixty-seven thousand, nine hundred nineteen".