80158428475921 has 4 divisors (see below), whose sum is σ = 82922512216500. Its totient is φ = 77394344735344.

The previous prime is 80158428475903. The next prime is 80158428475981. The reversal of 80158428475921 is 12957482485108.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 63558141296896 + 16600287179025 = 7972336^2 + 4074345^2 .

It is a cyclic number.

It is not a de Polignac number, because 80158428475921 - 2⁴¹ = 77959405220369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80158428475981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1382041870246 + ... + 1382041870303.

It is an arithmetic number, because the mean of its divisors is an integer number (20730628054125).

Almost surely, 2^{80158428475921} is an apocalyptic number.

It is an amenable number.

80158428475921 is a deficient number, since it is larger than the sum of its proper divisors (2764083740579).

80158428475921 is a wasteful number, since it uses less digits than its factorization.

80158428475921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2764083740578.

The product of its (nonzero) digits is 51609600, while the sum is 64.

The spelling of 80158428475921 in words is "eighty trillion, one hundred fifty-eight billion, four hundred twenty-eight million, four hundred seventy-five thousand, nine hundred twenty-one".