77796469777 has 16 divisors (see below), whose sum is σ = 85401231552. Its totient is φ = 70436491200.

The previous prime is 77796469721. The next prime is 77796469783.

77796469777 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 77796469777 - 2⁷ = 77796469649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (77796499777) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 136383 + ... + 417364.

It is an arithmetic number, because the mean of its divisors is an integer number (5337576972).

Almost surely, 2^77796469777 is an apocalyptic number.

It is an amenable number.

77796469777 is a deficient number, since it is larger than the sum of its proper divisors (7604761775).

77796469777 is a wasteful number, since it uses less digits than its factorization.

77796469777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 553968.

The product of its digits is 1372257936, while the sum is 76.

The spelling of 77796469777 in words is "seventy-seven billion, seven hundred ninety-six million, four hundred sixty-nine thousand, seven hundred seventy-seven".