8077164509 has 2 divisors, whose sum is σ = 8077164510. Its totient is φ = 8077164508.

The previous prime is 8077164397. The next prime is 8077164527. The reversal of 8077164509 is 9054617708.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7788062500 + 289102009 = 88250^2 + 17003^2 .

It is a cyclic number.

It is not a de Polignac number, because 8077164509 - 2²⁸ = 7808729053 is a prime.

It is a super-2 number, since 2×8077164509² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8077164539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4038582254 + 4038582255.

It is an arithmetic number, because the mean of its divisors is an integer number (4038582255).

Almost surely, 2^8077164509 is an apocalyptic number.

It is an amenable number.

8077164509 is a deficient number, since it is larger than the sum of its proper divisors (1).

8077164509 is an equidigital number, since it uses as much as digits as its factorization.

8077164509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 423360, while the sum is 47.

The square root of 8077164509 is about 89873.0466213314. The cubic root of 8077164509 is about 2006.4098109657.

The spelling of 8077164509 in words is "eight billion, seventy-seven million, one hundred sixty-four thousand, five hundred nine".