80375751221 has 2 divisors, whose sum is σ = 80375751222. Its totient is φ = 80375751220.

The previous prime is 80375751187. The next prime is 80375751223. The reversal of 80375751221 is 12215757308.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46272742321 + 34103008900 = 215111^2 + 184670^2 .

It is a cyclic number.

It is not a de Polignac number, because 80375751221 - 2¹⁴ = 80375734837 is a prime.

It is a super-2 number, since 2×80375751221² (a number of 23 digits) contains 22 as substring.

Together with 80375751223, 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 (80375751223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40187875610 + 40187875611.

It is an arithmetic number, because the mean of its divisors is an integer number (40187875611).

Almost surely, 2^80375751221 is an apocalyptic number.

It is an amenable number.

80375751221 is a deficient number, since it is larger than the sum of its proper divisors (1).

80375751221 is an equidigital number, since it uses as much as digits as its factorization.

80375751221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 117600, while the sum is 41.

The spelling of 80375751221 in words is "eighty billion, three hundred seventy-five million, seven hundred fifty-one thousand, two hundred twenty-one".