77045976659 has 4 divisors (see below), whose sum is σ = 77911661880. Its totient is φ = 76180291440.

The previous prime is 77045976629. The next prime is 77045976691. The reversal of 77045976659 is 95667954077.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 95667954077 = 66271 ⋅1443587.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77045976659 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 77045976595 and 77045976604.

It is not an unprimeable number, because it can be changed into a prime (77045976629) 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 in 3 ways as a sum of consecutive naturals, for example, 432842477 + ... + 432842654.

It is an arithmetic number, because the mean of its divisors is an integer number (19477915470).

Almost surely, 2^77045976659 is an apocalyptic number.

77045976659 is a deficient number, since it is larger than the sum of its proper divisors (865685221).

77045976659 is an equidigital number, since it uses as much as digits as its factorization.

77045976659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 865685220.

The product of its (nonzero) digits is 100018800, while the sum is 65.

The spelling of 77045976659 in words is "seventy-seven billion, forty-five million, nine hundred seventy-six thousand, six hundred fifty-nine".