28881056839 has 2 divisors, whose sum is σ = 28881056840. Its totient is φ = 28881056838.

The previous prime is 28881056807. The next prime is 28881056851. The reversal of 28881056839 is 93865018882.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28881056839 - 2⁵ = 28881056807 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28881056899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14440528419 + 14440528420.

It is an arithmetic number, because the mean of its divisors is an integer number (14440528420).

Almost surely, 2^28881056839 is an apocalyptic number.

28881056839 is a deficient number, since it is larger than the sum of its proper divisors (1).

28881056839 is an equidigital number, since it uses as much as digits as its factorization.

28881056839 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6635520, while the sum is 58.

The spelling of 28881056839 in words is "twenty-eight billion, eight hundred eighty-one million, fifty-six thousand, eight hundred thirty-nine".