77988983838133 has 2 divisors, whose sum is σ = 77988983838134. Its totient is φ = 77988983838132.

The previous prime is 77988983838121. The next prime is 77988983838137. The reversal of 77988983838133 is 33183838988977.

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., 65346173355204 + 12642810482929 = 8083698^2 + 3555673^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77988983838133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77988983838137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38994491919066 + 38994491919067.

It is an arithmetic number, because the mean of its divisors is an integer number (38994491919067).

Almost surely, 2^{77988983838133} is an apocalyptic number.

It is an amenable number.

77988983838133 is a deficient number, since it is larger than the sum of its proper divisors (1).

77988983838133 is an equidigital number, since it uses as much as digits as its factorization.

77988983838133 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10534551552, while the sum is 85.

The spelling of 77988983838133 in words is "seventy-seven trillion, nine hundred eighty-eight billion, nine hundred eighty-three million, eight hundred thirty-eight thousand, one hundred thirty-three".