76718339388689 has 4 divisors (see below), whose sum is σ = 76723832231424. Its totient is φ = 76712846545956.

The previous prime is 76718339388673. The next prime is 76718339388703. The reversal of 76718339388689 is 98688393381767.

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 not a de Polignac number, because 76718339388689 - 2⁴ = 76718339388673 is a prime.

It is a super-2 number, since 2×76718339388689² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 76718339388689.

It is not an unprimeable number, because it can be changed into a prime (76718339388629) 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 in 3 ways as a sum of consecutive naturals, for example, 2746400417 + ... + 2746428350.

It is an arithmetic number, because the mean of its divisors is an integer number (19180958057856).

Almost surely, 2^{76718339388689} is an apocalyptic number.

It is an amenable number.

76718339388689 is a deficient number, since it is larger than the sum of its proper divisors (5492842735).

76718339388689 is a wasteful number, since it uses less digits than its factorization.

76718339388689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5492842734.

The product of its digits is 15801827328, while the sum is 86.

The spelling of 76718339388689 in words is "seventy-six trillion, seven hundred eighteen billion, three hundred thirty-nine million, three hundred eighty-eight thousand, six hundred eighty-nine".