77773236341 has 2 divisors, whose sum is σ = 77773236342. Its totient is φ = 77773236340.

The previous prime is 77773236293. The next prime is 77773236347. The reversal of 77773236341 is 14363237777.

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., 76214644900 + 1558591441 = 276070^2 + 39479^2 .

It is a cyclic number.

It is not a de Polignac number, because 77773236341 - 2¹⁰ = 77773235317 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 77773236341.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77773236347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38886618170 + 38886618171.

It is an arithmetic number, because the mean of its divisors is an integer number (38886618171).

Almost surely, 2^77773236341 is an apocalyptic number.

It is an amenable number.

77773236341 is a deficient number, since it is larger than the sum of its proper divisors (1).

77773236341 is an equidigital number, since it uses as much as digits as its factorization.

77773236341 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3111696, while the sum is 50.

The spelling of 77773236341 in words is "seventy-seven billion, seven hundred seventy-three million, two hundred thirty-six thousand, three hundred forty-one".