80428571477 has 2 divisors, whose sum is σ = 80428571478. Its totient is φ = 80428571476.

The previous prime is 80428571423. The next prime is 80428571479. The reversal of 80428571477 is 77417582408.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66957255121 + 13471316356 = 258761^2 + 116066^2 .

It is a cyclic number.

It is not a de Polignac number, because 80428571477 - 2⁸ = 80428571221 is a prime.

Together with 80428571479, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80428571479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40214285738 + 40214285739.

It is an arithmetic number, because the mean of its divisors is an integer number (40214285739).

Almost surely, 2^80428571477 is an apocalyptic number.

It is an amenable number.

80428571477 is a deficient number, since it is larger than the sum of its proper divisors (1).

80428571477 is an equidigital number, since it uses as much as digits as its factorization.

80428571477 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3512320, while the sum is 53.

The spelling of 80428571477 in words is "eighty billion, four hundred twenty-eight million, five hundred seventy-one thousand, four hundred seventy-seven".