80348663621 has 2 divisors, whose sum is σ = 80348663622. Its totient is φ = 80348663620.

The previous prime is 80348663599. The next prime is 80348663641. The reversal of 80348663621 is 12636684308.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63383601121 + 16965062500 = 251761^2 + 130250^2 .

It is a cyclic number.

It is not a de Polignac number, because 80348663621 - 2¹⁸ = 80348401477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80348663641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40174331810 + 40174331811.

It is an arithmetic number, because the mean of its divisors is an integer number (40174331811).

Almost surely, 2^80348663621 is an apocalyptic number.

It is an amenable number.

80348663621 is a deficient number, since it is larger than the sum of its proper divisors (1).

80348663621 is an equidigital number, since it uses as much as digits as its factorization.

80348663621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 995328, while the sum is 47.

The spelling of 80348663621 in words is "eighty billion, three hundred forty-eight million, six hundred sixty-three thousand, six hundred twenty-one".