28571083129 has 2 divisors, whose sum is σ = 28571083130. Its totient is φ = 28571083128.

The previous prime is 28571083109. The next prime is 28571083157. The reversal of 28571083129 is 92138017582.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28467450729 + 103632400 = 168723^2 + 10180^2 .

It is a cyclic number.

It is not a de Polignac number, because 28571083129 - 2¹¹ = 28571081081 is a prime.

It is not a weakly prime, because it can be changed into another prime (28571083109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14285541564 + 14285541565.

It is an arithmetic number, because the mean of its divisors is an integer number (14285541565).

Almost surely, 2^28571083129 is an apocalyptic number.

It is an amenable number.

28571083129 is a deficient number, since it is larger than the sum of its proper divisors (1).

28571083129 is an equidigital number, since it uses as much as digits as its factorization.

28571083129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 241920, while the sum is 46.

The spelling of 28571083129 in words is "twenty-eight billion, five hundred seventy-one million, eighty-three thousand, one hundred twenty-nine".