3613543778077 has 2 divisors, whose sum is σ = 3613543778078. Its totient is φ = 3613543778076.

The previous prime is 3613543778029. The next prime is 3613543778083. The reversal of 3613543778077 is 7708773453163.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3303618867396 + 309924910681 = 1817586^2 + 556709^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3613543778077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3613543778017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1806771889038 + 1806771889039.

It is an arithmetic number, because the mean of its divisors is an integer number (1806771889039).

Almost surely, 2^{3613543778077} is an apocalyptic number.

It is an amenable number.

3613543778077 is a deficient number, since it is larger than the sum of its proper divisors (1).

3613543778077 is an equidigital number, since it uses as much as digits as its factorization.

3613543778077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 62233920, while the sum is 61.

The spelling of 3613543778077 in words is "three trillion, six hundred thirteen billion, five hundred forty-three million, seven hundred seventy-eight thousand, seventy-seven".