28338050551 has 4 divisors (see below), whose sum is σ = 28410899400. Its totient is φ = 28265201704.

The previous prime is 28338050549. The next prime is 28338050557. The reversal of 28338050551 is 15505083382.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28338050551 - 2¹ = 28338050549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28338050557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36423841 + ... + 36424618.

It is an arithmetic number, because the mean of its divisors is an integer number (7102724850).

Almost surely, 2^28338050551 is an apocalyptic number.

28338050551 is a deficient number, since it is larger than the sum of its proper divisors (72848849).

28338050551 is an equidigital number, since it uses as much as digits as its factorization.

28338050551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72848848.

The product of its (nonzero) digits is 144000, while the sum is 40.

The spelling of 28338050551 in words is "twenty-eight billion, three hundred thirty-eight million, fifty thousand, five hundred fifty-one".