77041804613 has 2 divisors, whose sum is σ = 77041804614. Its totient is φ = 77041804612.

The previous prime is 77041804537. The next prime is 77041804621. The reversal of 77041804613 is 31640814077.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55386327649 + 21655476964 = 235343^2 + 147158^2 .

It is a cyclic number.

It is not a de Polignac number, because 77041804613 - 2²⁴ = 77025027397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77041804013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38520902306 + 38520902307.

It is an arithmetic number, because the mean of its divisors is an integer number (38520902307).

Almost surely, 2^77041804613 is an apocalyptic number.

It is an amenable number.

77041804613 is a deficient number, since it is larger than the sum of its proper divisors (1).

77041804613 is an equidigital number, since it uses as much as digits as its factorization.

77041804613 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112896, while the sum is 41.

The spelling of 77041804613 in words is "seventy-seven billion, forty-one million, eight hundred four thousand, six hundred thirteen".