77328566582377 has 4 divisors (see below), whose sum is σ = 84358436271696. Its totient is φ = 70298696893060.

The previous prime is 77328566582317. The next prime is 77328566582381.

77328566582377 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77328566582377 is a prime.

It is a super-2 number, since 2×77328566582377² (a number of 29 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (76) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77328566582317) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3514934844643 + ... + 3514934844664.

It is an arithmetic number, because the mean of its divisors is an integer number (21089609067924).

Almost surely, 2^{77328566582377} is an apocalyptic number.

It is an amenable number.

77328566582377 is a deficient number, since it is larger than the sum of its proper divisors (7029869689319).

77328566582377 is a wasteful number, since it uses less digits than its factorization.

77328566582377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7029869689318.

The product of its digits is 4978713600, while the sum is 76.

The spelling of 77328566582377 in words is "seventy-seven trillion, three hundred twenty-eight billion, five hundred sixty-six million, five hundred eighty-two thousand, three hundred seventy-seven".