80501355391 has 2 divisors, whose sum is σ = 80501355392. Its totient is φ = 80501355390.

The previous prime is 80501355383. The next prime is 80501355419. The reversal of 80501355391 is 19355310508.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 80501355391 - 2³ = 80501355383 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80501055391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40250677695 + 40250677696.

It is an arithmetic number, because the mean of its divisors is an integer number (40250677696).

Almost surely, 2^80501355391 is an apocalyptic number.

80501355391 is a deficient number, since it is larger than the sum of its proper divisors (1).

80501355391 is an equidigital number, since it uses as much as digits as its factorization.

80501355391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81000, while the sum is 40.

Adding to 80501355391 its reverse (19355310508), we get a palindrome (99856665899).

The spelling of 80501355391 in words is "eighty billion, five hundred one million, three hundred fifty-five thousand, three hundred ninety-one".