28357828141 has 2 divisors, whose sum is σ = 28357828142. Its totient is φ = 28357828140.

The previous prime is 28357828139. The next prime is 28357828183. The reversal of 28357828141 is 14182875382.

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., 20179338916 + 8178489225 = 142054^2 + 90435^2 .

It is a cyclic number.

It is not a de Polignac number, because 28357828141 - 2¹ = 28357828139 is a prime.

Together with 28357828139, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28357328141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14178914070 + 14178914071.

It is an arithmetic number, because the mean of its divisors is an integer number (14178914071).

Almost surely, 2^28357828141 is an apocalyptic number.

It is an amenable number.

28357828141 is a deficient number, since it is larger than the sum of its proper divisors (1).

28357828141 is an equidigital number, since it uses as much as digits as its factorization.

28357828141 is an evil number, because the sum of its binary digits is even.

The product of its digits is 860160, while the sum is 49.

The spelling of 28357828141 in words is "twenty-eight billion, three hundred fifty-seven million, eight hundred twenty-eight thousand, one hundred forty-one".