77964110971 has 4 divisors (see below), whose sum is σ = 78024502744. Its totient is φ = 77903719200.

The previous prime is 77964110953. The next prime is 77964110989. The reversal of 77964110971 is 17901146977.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17901146977 = 7 ⋅2557306711.

It is an interprime number because it is at equal distance from previous prime (77964110953) and next prime (77964110989).

It is a cyclic number.

It is not a de Polignac number, because 77964110971 - 2¹⁹ = 77963586683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77964110911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30193950 + ... + 30196531.

It is an arithmetic number, because the mean of its divisors is an integer number (19506125686).

Almost surely, 2^77964110971 is an apocalyptic number.

77964110971 is a deficient number, since it is larger than the sum of its proper divisors (60391773).

77964110971 is a wasteful number, since it uses less digits than its factorization.

77964110971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60391772.

The product of its (nonzero) digits is 666792, while the sum is 52.

The spelling of 77964110971 in words is "seventy-seven billion, nine hundred sixty-four million, one hundred ten thousand, nine hundred seventy-one".