77773077777 has 8 divisors (see below), whose sum is σ = 109155196960. Its totient is φ = 49119838560.

The previous prime is 77773077769. The next prime is 77773077871. The reversal of 77773077777 is 77777037777.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 77773077777 - 2³ = 77773077769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77773077677) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 682219924 + ... + 682220037.

It is an arithmetic number, because the mean of its divisors is an integer number (13644399620).

Almost surely, 2^77773077777 is an apocalyptic number.

It is an amenable number.

77773077777 is a deficient number, since it is larger than the sum of its proper divisors (31382119183).

77773077777 is a wasteful number, since it uses less digits than its factorization.

77773077777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1364439983.

The product of its (nonzero) digits is 121060821, while the sum is 66.

The spelling of 77773077777 in words is "seventy-seven billion, seven hundred seventy-three million, seventy-seven thousand, seven hundred seventy-seven".