77970064567 has 2 divisors, whose sum is σ = 77970064568. Its totient is φ = 77970064566.

The previous prime is 77970064541. The next prime is 77970064619. The reversal of 77970064567 is 76546007977.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 77970064567 - 2¹⁹ = 77969540279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77970065567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38985032283 + 38985032284.

It is an arithmetic number, because the mean of its divisors is an integer number (38985032284).

Almost surely, 2^77970064567 is an apocalyptic number.

77970064567 is a deficient number, since it is larger than the sum of its proper divisors (1).

77970064567 is an equidigital number, since it uses as much as digits as its factorization.

77970064567 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15558480, while the sum is 58.

The spelling of 77970064567 in words is "seventy-seven billion, nine hundred seventy million, sixty-four thousand, five hundred sixty-seven".