77700080777 has 16 divisors (see below), whose sum is σ = 85187567808. Its totient is φ = 70284002880.

The previous prime is 77700080749. The next prime is 77700080797. The reversal of 77700080777 is 77708000777.

It is a cyclic number.

It is not a de Polignac number, because 77700080777 - 2⁶ = 77700080713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77700080707) 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, 2053643 + ... + 2091135.

It is an arithmetic number, because the mean of its divisors is an integer number (5324222988).

Almost surely, 2^77700080777 is an apocalyptic number.

It is an amenable number.

77700080777 is a deficient number, since it is larger than the sum of its proper divisors (7487487031).

77700080777 is a wasteful number, since it uses less digits than its factorization.

77700080777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38440.

The product of its (nonzero) digits is 941192, while the sum is 50.

The spelling of 77700080777 in words is "seventy-seven billion, seven hundred million, eighty thousand, seven hundred seventy-seven".