80356872287 has 2 divisors, whose sum is σ = 80356872288. Its totient is φ = 80356872286.

The previous prime is 80356872269. The next prime is 80356872353. The reversal of 80356872287 is 78227865308.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 80356872287 - 2¹⁰ = 80356871263 is a prime.

It is a super-2 number, since 2×80356872287² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80356872887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40178436143 + 40178436144.

It is an arithmetic number, because the mean of its divisors is an integer number (40178436144).

Almost surely, 2^80356872287 is an apocalyptic number.

80356872287 is a deficient number, since it is larger than the sum of its proper divisors (1).

80356872287 is an equidigital number, since it uses as much as digits as its factorization.

80356872287 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9031680, while the sum is 56.

The spelling of 80356872287 in words is "eighty billion, three hundred fifty-six million, eight hundred seventy-two thousand, two hundred eighty-seven".