77004315777 has 4 divisors (see below), whose sum is σ = 102672421040. Its totient is φ = 51336210516.

The previous prime is 77004315743. The next prime is 77004315779. The reversal of 77004315777 is 77751340077.

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, and also an emirpimes, since its reverse is a distinct semiprime: 77751340077 = 3 ⋅25917113359.

It is not a de Polignac number, because 77004315777 - 2⁷ = 77004315649 is a prime.

It is a super-2 number, since 2×77004315777² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77004315779) 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, 12834052627 + ... + 12834052632.

It is an arithmetic number, because the mean of its divisors is an integer number (25668105260).

Almost surely, 2^77004315777 is an apocalyptic number.

It is an amenable number.

77004315777 is a deficient number, since it is larger than the sum of its proper divisors (25668105263).

77004315777 is a wasteful number, since it uses less digits than its factorization.

77004315777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25668105262.

The product of its (nonzero) digits is 1008420, while the sum is 48.

The spelling of 77004315777 in words is "seventy-seven billion, four million, three hundred fifteen thousand, seven hundred seventy-seven".