28113158947 has 2 divisors, whose sum is σ = 28113158948. Its totient is φ = 28113158946.

The previous prime is 28113158881. The next prime is 28113158963. The reversal of 28113158947 is 74985131182.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28113158947 - 2¹⁹ = 28112634659 is a prime.

It is a super-2 number, since 2×28113158947² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28113158947.

It is not a weakly prime, because it can be changed into another prime (28113158987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14056579473 + 14056579474.

It is an arithmetic number, because the mean of its divisors is an integer number (14056579474).

Almost surely, 2^28113158947 is an apocalyptic number.

28113158947 is a deficient number, since it is larger than the sum of its proper divisors (1).

28113158947 is an equidigital number, since it uses as much as digits as its factorization.

28113158947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 483840, while the sum is 49.

The spelling of 28113158947 in words is "twenty-eight billion, one hundred thirteen million, one hundred fifty-eight thousand, nine hundred forty-seven".