28634947147 has 2 divisors, whose sum is σ = 28634947148. Its totient is φ = 28634947146.

The previous prime is 28634947127. The next prime is 28634947153. The reversal of 28634947147 is 74174943682.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28634947147 - 2²³ = 28626558539 is a prime.

It is a super-2 number, since 2×28634947147² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (28634947127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14317473573 + 14317473574.

It is an arithmetic number, because the mean of its divisors is an integer number (14317473574).

Almost surely, 2^28634947147 is an apocalyptic number.

28634947147 is a deficient number, since it is larger than the sum of its proper divisors (1).

28634947147 is an equidigital number, since it uses as much as digits as its factorization.

28634947147 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8128512, while the sum is 55.

The spelling of 28634947147 in words is "twenty-eight billion, six hundred thirty-four million, nine hundred forty-seven thousand, one hundred forty-seven".