28801021453 has 2 divisors, whose sum is σ = 28801021454. Its totient is φ = 28801021452.

The previous prime is 28801021451. The next prime is 28801021463. The reversal of 28801021453 is 35412010882.

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., 16807048164 + 11993973289 = 129642^2 + 109517^2 .

It is a cyclic number.

It is not a de Polignac number, because 28801021453 - 2¹ = 28801021451 is a prime.

Together with 28801021451, 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 (28801021451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14400510726 + 14400510727.

It is an arithmetic number, because the mean of its divisors is an integer number (14400510727).

Almost surely, 2^28801021453 is an apocalyptic number.

It is an amenable number.

28801021453 is a deficient number, since it is larger than the sum of its proper divisors (1).

28801021453 is an equidigital number, since it uses as much as digits as its factorization.

28801021453 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15360, while the sum is 34.

The spelling of 28801021453 in words is "twenty-eight billion, eight hundred one million, twenty-one thousand, four hundred fifty-three".