77988983838193 has 2 divisors, whose sum is σ = 77988983838194. Its totient is φ = 77988983838192.

The previous prime is 77988983838163. The next prime is 77988983838223. The reversal of 77988983838193 is 39183838988977.

It is a balanced prime because it is at equal distance from previous prime (77988983838163) and next prime (77988983838223).

It can be written as a sum of positive squares in only one way, i.e., 41253541643664 + 36735442194529 = 6422892^2 + 6060977^2 .

It is a cyclic number.

It is not a de Polignac number, because 77988983838193 - 2¹³ = 77988983830001 is a prime.

It is a super-2 number, since 2×77988983838193² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 77988983838098 and 77988983838107.

It is not a weakly prime, because it can be changed into another prime (77988983838133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38994491919096 + 38994491919097.

It is an arithmetic number, because the mean of its divisors is an integer number (38994491919097).

Almost surely, 2^{77988983838193} is an apocalyptic number.

It is an amenable number.

77988983838193 is a deficient number, since it is larger than the sum of its proper divisors (1).

77988983838193 is an equidigital number, since it uses as much as digits as its factorization.

77988983838193 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31603654656, while the sum is 91.

The spelling of 77988983838193 in words is "seventy-seven trillion, nine hundred eighty-eight billion, nine hundred eighty-three million, eight hundred thirty-eight thousand, one hundred ninety-three".