69128252927977 has 2 divisors, whose sum is σ = 69128252927978. Its totient is φ = 69128252927976.

The previous prime is 69128252927971. The next prime is 69128252928001. The reversal of 69128252927977 is 77972925282196.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63139249732441 + 5989003195536 = 7946021^2 + 2447244^2 .

It is a cyclic number.

It is not a de Polignac number, because 69128252927977 - 2³ = 69128252927969 is a prime.

It is not a weakly prime, because it can be changed into another prime (69128252927971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34564126463988 + 34564126463989.

It is an arithmetic number, because the mean of its divisors is an integer number (34564126463989).

Almost surely, 2^{69128252927977} is an apocalyptic number.

It is an amenable number.

69128252927977 is a deficient number, since it is larger than the sum of its proper divisors (1).

69128252927977 is an equidigital number, since it uses as much as digits as its factorization.

69128252927977 is an evil number, because the sum of its binary digits is even.

The product of its digits is 960180480, while the sum is 76.

The spelling of 69128252927977 in words is "sixty-nine trillion, one hundred twenty-eight billion, two hundred fifty-two million, nine hundred twenty-seven thousand, nine hundred seventy-seven".