28327550251 has 32 divisors (see below), whose sum is σ = 38569982976. Its totient is φ = 20088432000.

The previous prime is 28327550249. The next prime is 28327550257. The reversal of 28327550251 is 15205572382.

It is not a de Polignac number, because 28327550251 - 2¹ = 28327550249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28327550257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 128220 + ... + 270361.

It is an arithmetic number, because the mean of its divisors is an integer number (1205311968).

Almost surely, 2^28327550251 is an apocalyptic number.

28327550251 is a deficient number, since it is larger than the sum of its proper divisors (10242432725).

28327550251 is a wasteful number, since it uses less digits than its factorization.

28327550251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398683.

The product of its (nonzero) digits is 168000, while the sum is 40.

The spelling of 28327550251 in words is "twenty-eight billion, three hundred twenty-seven million, five hundred fifty thousand, two hundred fifty-one".