80010356981749 has 2 divisors, whose sum is σ = 80010356981750. Its totient is φ = 80010356981748.

The previous prime is 80010356981747. The next prime is 80010356981831. The reversal of 80010356981749 is 94718965301008.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71544107640625 + 8466249341124 = 8458375^2 + 2909682^2 .

It is a cyclic number.

It is not a de Polignac number, because 80010356981749 - 2¹ = 80010356981747 is a prime.

Together with 80010356981747, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80010356981747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40005178490874 + 40005178490875.

It is an arithmetic number, because the mean of its divisors is an integer number (40005178490875).

Almost surely, 2^{80010356981749} is an apocalyptic number.

It is an amenable number.

80010356981749 is a deficient number, since it is larger than the sum of its proper divisors (1).

80010356981749 is an equidigital number, since it uses as much as digits as its factorization.

80010356981749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13063680, while the sum is 61.

The spelling of 80010356981749 in words is "eighty trillion, ten billion, three hundred fifty-six million, nine hundred eighty-one thousand, seven hundred forty-nine".