77788673620241 has 8 divisors (see below), whose sum is σ = 78510901372200. Its totient is φ = 77066601690240.

The previous prime is 77788673620213. The next prime is 77788673620271. The reversal of 77788673620241 is 14202637688777.

It can be written as a sum of positive squares in 4 ways, for example, as 5272208384641 + 72516465235600 = 2296129^2 + 8515660^2 .

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 77788673620241 - 2³⁴ = 77771493751057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77788673620271) 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, 37952306 + ... + 39949403.

It is an arithmetic number, because the mean of its divisors is an integer number (9813862671525).

Almost surely, 2^{77788673620241} is an apocalyptic number.

It is an amenable number.

77788673620241 is a deficient number, since it is larger than the sum of its proper divisors (722227751959).

77788673620241 is a wasteful number, since it uses less digits than its factorization.

77788673620241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77910979.

The product of its (nonzero) digits is 265531392, while the sum is 68.

The spelling of 77788673620241 in words is "seventy-seven trillion, seven hundred eighty-eight billion, six hundred seventy-three million, six hundred twenty thousand, two hundred forty-one".