80081781337 has 4 divisors (see below), whose sum is σ = 81046622160. Its totient is φ = 79116940516.

The previous prime is 80081781211. The next prime is 80081781347. The reversal of 80081781337 is 73318718008.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 80081781337 - 2⁷ = 80081781209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80081781347) 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 in 3 ways as a sum of consecutive naturals, for example, 482420287 + ... + 482420452.

It is an arithmetic number, because the mean of its divisors is an integer number (20261655540).

Almost surely, 2^80081781337 is an apocalyptic number.

It is an amenable number.

80081781337 is a deficient number, since it is larger than the sum of its proper divisors (964840823).

80081781337 is an equidigital number, since it uses as much as digits as its factorization.

80081781337 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 964840822.

The product of its (nonzero) digits is 225792, while the sum is 46.

The spelling of 80081781337 in words is "eighty billion, eighty-one million, seven hundred eighty-one thousand, three hundred thirty-seven".