28342830859991 has 2 divisors, whose sum is σ = 28342830859992. Its totient is φ = 28342830859990.

The previous prime is 28342830859979. The next prime is 28342830860009. The reversal of 28342830859991 is 19995803824382.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28342830859991 is a prime.

It is a super-2 number, since 2×28342830859991² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28342830859391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14171415429995 + 14171415429996.

It is an arithmetic number, because the mean of its divisors is an integer number (14171415429996).

Almost surely, 2^{28342830859991} is an apocalyptic number.

28342830859991 is a deficient number, since it is larger than the sum of its proper divisors (1).

28342830859991 is an equidigital number, since it uses as much as digits as its factorization.

28342830859991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 268738560, while the sum is 71.

The spelling of 28342830859991 in words is "twenty-eight trillion, three hundred forty-two billion, eight hundred thirty million, eight hundred fifty-nine thousand, nine hundred ninety-one".