28555511078279 has 2 divisors, whose sum is σ = 28555511078280. Its totient is φ = 28555511078278.

The previous prime is 28555511078257. The next prime is 28555511078317. The reversal of 28555511078279 is 97287011555582.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28555511078279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28555510078279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14277755539139 + 14277755539140.

It is an arithmetic number, because the mean of its divisors is an integer number (14277755539140).

Almost surely, 2^{28555511078279} is an apocalyptic number.

28555511078279 is a deficient number, since it is larger than the sum of its proper divisors (1).

28555511078279 is an equidigital number, since it uses as much as digits as its factorization.

28555511078279 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 70560000, while the sum is 65.

The spelling of 28555511078279 in words is "twenty-eight trillion, five hundred fifty-five billion, five hundred eleven million, seventy-eight thousand, two hundred seventy-nine".