28646514047 has 2 divisors, whose sum is σ = 28646514048. Its totient is φ = 28646514046.

The previous prime is 28646513981. The next prime is 28646514089. The reversal of 28646514047 is 74041564682.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28646514047 - 2¹⁰ = 28646513023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28646513992 and 28646514010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28646514097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14323257023 + 14323257024.

It is an arithmetic number, because the mean of its divisors is an integer number (14323257024).

Almost surely, 2^28646514047 is an apocalyptic number.

28646514047 is a deficient number, since it is larger than the sum of its proper divisors (1).

28646514047 is an equidigital number, since it uses as much as digits as its factorization.

28646514047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1290240, while the sum is 47.

The spelling of 28646514047 in words is "twenty-eight billion, six hundred forty-six million, five hundred fourteen thousand, forty-seven".