28870543357 has 2 divisors, whose sum is σ = 28870543358. Its totient is φ = 28870543356.

The previous prime is 28870543297. The next prime is 28870543367. The reversal of 28870543357 is 75334507882.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28353844996 + 516698361 = 168386^2 + 22731^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28870543357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28870543367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14435271678 + 14435271679.

It is an arithmetic number, because the mean of its divisors is an integer number (14435271679).

Almost surely, 2^28870543357 is an apocalyptic number.

It is an amenable number.

28870543357 is a deficient number, since it is larger than the sum of its proper divisors (1).

28870543357 is an equidigital number, since it uses as much as digits as its factorization.

28870543357 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5644800, while the sum is 52.

The spelling of 28870543357 in words is "twenty-eight billion, eight hundred seventy million, five hundred forty-three thousand, three hundred fifty-seven".