28697144053 has 2 divisors, whose sum is σ = 28697144054. Its totient is φ = 28697144052.

The previous prime is 28697144041. The next prime is 28697144071. The reversal of 28697144053 is 35044179682.

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., 28690600689 + 6543364 = 169383^2 + 2558^2 .

It is a cyclic number.

It is not a de Polignac number, because 28697144053 - 2³³ = 20107209461 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28697143988 and 28697144006.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28697144033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14348572026 + 14348572027.

It is an arithmetic number, because the mean of its divisors is an integer number (14348572027).

It is a 2-persistent number, because it is pandigital, and so is 2⋅28697144053 = 57394288106, but 3⋅28697144053 = 86091432159 is not.

Almost surely, 2^28697144053 is an apocalyptic number.

It is an amenable number.

28697144053 is a deficient number, since it is larger than the sum of its proper divisors (1).

28697144053 is an equidigital number, since it uses as much as digits as its factorization.

28697144053 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1451520, while the sum is 49.

The spelling of 28697144053 in words is "twenty-eight billion, six hundred ninety-seven million, one hundred forty-four thousand, fifty-three".