28691141839 has 2 divisors, whose sum is σ = 28691141840. Its totient is φ = 28691141838.

The previous prime is 28691141837. The next prime is 28691141861. The reversal of 28691141839 is 93814119682.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28691141839 - 2¹ = 28691141837 is a prime.

Together with 28691141837, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28691141837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14345570919 + 14345570920.

It is an arithmetic number, because the mean of its divisors is an integer number (14345570920).

Almost surely, 2^28691141839 is an apocalyptic number.

28691141839 is a deficient number, since it is larger than the sum of its proper divisors (1).

28691141839 is an equidigital number, since it uses as much as digits as its factorization.

28691141839 is an evil number, because the sum of its binary digits is even.

The product of its digits is 746496, while the sum is 52.

The spelling of 28691141839 in words is "twenty-eight billion, six hundred ninety-one million, one hundred forty-one thousand, eight hundred thirty-nine".