28888054364891 has 2 divisors, whose sum is σ = 28888054364892. Its totient is φ = 28888054364890.

The previous prime is 28888054364831. The next prime is 28888054364899. The reversal of 28888054364891 is 19846345088882.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28888054364891 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (28888054364899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14444027182445 + 14444027182446.

It is an arithmetic number, because the mean of its divisors is an integer number (14444027182446).

Almost surely, 2^{28888054364891} is an apocalyptic number.

28888054364891 is a deficient number, since it is larger than the sum of its proper divisors (1).

28888054364891 is an equidigital number, since it uses as much as digits as its factorization.

28888054364891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 849346560, while the sum is 74.

The spelling of 28888054364891 in words is "twenty-eight trillion, eight hundred eighty-eight billion, fifty-four million, three hundred sixty-four thousand, eight hundred ninety-one".