28639478094443 has 2 divisors, whose sum is σ = 28639478094444. Its totient is φ = 28639478094442.

The previous prime is 28639478094439. The next prime is 28639478094523. The reversal of 28639478094443 is 34449087493682.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28639478094443 - 2² = 28639478094439 is a prime.

It is a super-3 number, since 3×28639478094443³ (a number of 41 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (28639478094343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14319739047221 + 14319739047222.

It is an arithmetic number, because the mean of its divisors is an integer number (14319739047222).

Almost surely, 2^{28639478094443} is an apocalyptic number.

28639478094443 is a deficient number, since it is larger than the sum of its proper divisors (1).

28639478094443 is an equidigital number, since it uses as much as digits as its factorization.

28639478094443 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1003290624, while the sum is 71.

The spelling of 28639478094443 in words is "twenty-eight trillion, six hundred thirty-nine billion, four hundred seventy-eight million, ninety-four thousand, four hundred forty-three".