77734826143361 has 4 divisors (see below), whose sum is σ = 77739942648132. Its totient is φ = 77729709638592.

The previous prime is 77734826143357. The next prime is 77734826143369. The reversal of 77734826143361 is 16334162843777.

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 77060850821761 + 673975321600 = 8778431^2 + 820960^2 .

It is a cyclic number.

It is not a de Polignac number, because 77734826143361 - 2² = 77734826143357 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 77734826143294 and 77734826143303.

It is not an unprimeable number, because it can be changed into a prime (77734826143369) 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, 2558229596 + ... + 2558259981.

It is an arithmetic number, because the mean of its divisors is an integer number (19434985662033).

Almost surely, 2^{77734826143361} is an apocalyptic number.

It is an amenable number.

77734826143361 is a deficient number, since it is larger than the sum of its proper divisors (5116504771).

77734826143361 is a wasteful number, since it uses less digits than its factorization.

77734826143361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5116504770.

The product of its digits is 85349376, while the sum is 62.

The spelling of 77734826143361 in words is "seventy-seven trillion, seven hundred thirty-four billion, eight hundred twenty-six million, one hundred forty-three thousand, three hundred sixty-one".