77734614227657 has 4 divisors (see below), whose sum is σ = 77735165205396. Its totient is φ = 77734063249920.

The previous prime is 77734614227629. The next prime is 77734614227689. The reversal of 77734614227657 is 75672241643777.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 23838181294096 + 53896432933561 = 4882436^2 + 7341419^2 .

It is a cyclic number.

It is not a de Polignac number, because 77734614227657 - 2²⁴ = 77734597450441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77734614287657) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 275277188 + ... + 275559429.

It is an arithmetic number, because the mean of its divisors is an integer number (19433791301349).

Almost surely, 2^{77734614227657} is an apocalyptic number.

It is an amenable number.

77734614227657 is a deficient number, since it is larger than the sum of its proper divisors (550977739).

77734614227657 is a wasteful number, since it uses less digits than its factorization.

77734614227657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550977738.

The product of its digits is 580849920, while the sum is 68.

The spelling of 77734614227657 in words is "seventy-seven trillion, seven hundred thirty-four billion, six hundred fourteen million, two hundred twenty-seven thousand, six hundred fifty-seven".