28015291847 has 2 divisors, whose sum is σ = 28015291848. Its totient is φ = 28015291846.

The previous prime is 28015291807. The next prime is 28015291859. The reversal of 28015291847 is 74819251082.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28015291847 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28015291807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14007645923 + 14007645924.

It is an arithmetic number, because the mean of its divisors is an integer number (14007645924).

Almost surely, 2^28015291847 is an apocalyptic number.

28015291847 is a deficient number, since it is larger than the sum of its proper divisors (1).

28015291847 is an equidigital number, since it uses as much as digits as its factorization.

28015291847 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 322560, while the sum is 47.

The spelling of 28015291847 in words is "twenty-eight billion, fifteen million, two hundred ninety-one thousand, eight hundred forty-seven".