77700770077 has 8 divisors (see below), whose sum is σ = 88838574336. Its totient is φ = 66572389392.

The previous prime is 77700770039. The next prime is 77700770101. The reversal of 77700770077 is 77007700777.

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

It is a cyclic number.

It is not a de Polignac number, because 77700770077 - 2²³ = 77692381469 is a prime.

It is a Duffinian number.

77700770077 is a modest number, since divided by 770077 gives 777 as remainder.

It is a zygodrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 77700770077.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77700770177) 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, 2338213 + ... + 2371210.

It is an arithmetic number, because the mean of its divisors is an integer number (11104821792).

Almost surely, 2^77700770077 is an apocalyptic number.

It is an amenable number.

77700770077 is a deficient number, since it is larger than the sum of its proper divisors (11137804259).

77700770077 is a wasteful number, since it uses less digits than its factorization.

77700770077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4711787.

The product of its (nonzero) digits is 823543, while the sum is 49.

The spelling of 77700770077 in words is "seventy-seven billion, seven hundred million, seven hundred seventy thousand, seventy-seven".