28851973127 has 4 divisors (see below), whose sum is σ = 28855211880. Its totient is φ = 28848734376.

The previous prime is 28851973091. The next prime is 28851973153. The reversal of 28851973127 is 72137915882.

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 28851973127 - 2⁶ = 28851973063 is a prime.

It is a super-2 number, since 2×28851973127² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28851973027) 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, 1605977 + ... + 1623842.

It is an arithmetic number, because the mean of its divisors is an integer number (7213802970).

Almost surely, 2^28851973127 is an apocalyptic number.

28851973127 is a deficient number, since it is larger than the sum of its proper divisors (3238753).

28851973127 is an equidigital number, since it uses as much as digits as its factorization.

28851973127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3238752.

The product of its digits is 1693440, while the sum is 53.

The spelling of 28851973127 in words is "twenty-eight billion, eight hundred fifty-one million, nine hundred seventy-three thousand, one hundred twenty-seven".