977027807748169 has 2 divisors, whose sum is σ = 977027807748170. Its totient is φ = 977027807748168.

The previous prime is 977027807747983. The next prime is 977027807748203. The reversal of 977027807748169 is 961847708720779.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 905684648214025 + 71343159534144 = 30094595^2 + 8446488^2 .

It is an emirp because it is prime and its reverse (961847708720779) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 977027807748169 - 2⁹ = 977027807747657 is a prime.

It is a super-2 number, since 2×977027807748169² (a number of 31 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 977027807748092 and 977027807748101.

It is not a weakly prime, because it can be changed into another prime (977027807748269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 488513903874084 + 488513903874085.

It is an arithmetic number, because the mean of its divisors is an integer number (488513903874085).

Almost surely, 2^{977027807748169} is an apocalyptic number.

It is an amenable number.

977027807748169 is a deficient number, since it is larger than the sum of its proper divisors (1).

977027807748169 is an equidigital number, since it uses as much as digits as its factorization.

977027807748169 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4182119424, while the sum is 82.

The spelling of 977027807748169 in words is "nine hundred seventy-seven trillion, twenty-seven billion, eight hundred seven million, seven hundred forty-eight thousand, one hundred sixty-nine".