77988983538163 has 2 divisors, whose sum is σ = 77988983538164. Its totient is φ = 77988983538162.

The previous prime is 77988983538119. The next prime is 77988983538197. The reversal of 77988983538163 is 36183538988977.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 77988983538163 - 2²¹ = 77988981441011 is a prime.

It is not a weakly prime, because it can be changed into another prime (77988983838163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38994491769081 + 38994491769082.

It is an arithmetic number, because the mean of its divisors is an integer number (38994491769082).

Almost surely, 2^{77988983538163} is an apocalyptic number.

77988983538163 is a deficient number, since it is larger than the sum of its proper divisors (1).

77988983538163 is an equidigital number, since it uses as much as digits as its factorization.

77988983538163 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13168189440, while the sum is 85.

The spelling of 77988983538163 in words is "seventy-seven trillion, nine hundred eighty-eight billion, nine hundred eighty-three million, five hundred thirty-eight thousand, one hundred sixty-three".