80158428475981 has 2 divisors, whose sum is σ = 80158428475982. Its totient is φ = 80158428475980.

The previous prime is 80158428475903. The next prime is 80158428476017. The reversal of 80158428475981 is 18957482485108.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66890986473481 + 13267442002500 = 8178691^2 + 3642450^2 .

It is a cyclic number.

It is not a de Polignac number, because 80158428475981 - 2³³ = 80149838541389 is a prime.

It is a super-2 number, since 2×80158428475981² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 80158428475981.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80158428475481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40079214237990 + 40079214237991.

It is an arithmetic number, because the mean of its divisors is an integer number (40079214237991).

Almost surely, 2^{80158428475981} is an apocalyptic number.

It is an amenable number.

80158428475981 is a deficient number, since it is larger than the sum of its proper divisors (1).

80158428475981 is an equidigital number, since it uses as much as digits as its factorization.

80158428475981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 206438400, while the sum is 70.

The spelling of 80158428475981 in words is "eighty trillion, one hundred fifty-eight billion, four hundred twenty-eight million, four hundred seventy-five thousand, nine hundred eighty-one".