28397935144459 has 4 divisors (see below), whose sum is σ = 29090567709000. Its totient is φ = 27705302579920.

The previous prime is 28397935144387. The next prime is 28397935144591. The reversal of 28397935144459 is 95444153979382.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28397935144459 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28397935144391 and 28397935144400.

It is not an unprimeable number, because it can be changed into a prime (28397935147459) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 346316282209 + ... + 346316282290.

It is an arithmetic number, because the mean of its divisors is an integer number (7272641927250).

Almost surely, 2^{28397935144459} is an apocalyptic number.

28397935144459 is a deficient number, since it is larger than the sum of its proper divisors (692632564541).

28397935144459 is an equidigital number, since it uses as much as digits as its factorization.

28397935144459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 692632564540.

The product of its digits is 1175731200, while the sum is 73.

The spelling of 28397935144459 in words is "twenty-eight trillion, three hundred ninety-seven billion, nine hundred thirty-five million, one hundred forty-four thousand, four hundred fifty-nine".