28801021451 has 2 divisors, whose sum is σ = 28801021452. Its totient is φ = 28801021450.

The previous prime is 28801021421. The next prime is 28801021453. The reversal of 28801021451 is 15412010882.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28801021451 - 2⁶ = 28801021387 is a prime.

Together with 28801021453, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28801021453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14400510725 + 14400510726.

It is an arithmetic number, because the mean of its divisors is an integer number (14400510726).

Almost surely, 2^28801021451 is an apocalyptic number.

28801021451 is a deficient number, since it is larger than the sum of its proper divisors (1).

28801021451 is an equidigital number, since it uses as much as digits as its factorization.

28801021451 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5120, while the sum is 32.

The spelling of 28801021451 in words is "twenty-eight billion, eight hundred one million, twenty-one thousand, four hundred fifty-one".