28839212553 has 4 divisors (see below), whose sum is σ = 38452283408. Its totient is φ = 19226141700.

The previous prime is 28839212543. The next prime is 28839212581. The reversal of 28839212553 is 35521293882.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 28839212553 - 2⁶ = 28839212489 is a prime.

It is a super-2 number, since 2×28839212553² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28839212533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4806535423 + ... + 4806535428.

It is an arithmetic number, because the mean of its divisors is an integer number (9613070852).

Almost surely, 2^28839212553 is an apocalyptic number.

It is an amenable number.

28839212553 is a deficient number, since it is larger than the sum of its proper divisors (9613070855).

28839212553 is an equidigital number, since it uses as much as digits as its factorization.

28839212553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9613070854.

The product of its digits is 1036800, while the sum is 48.

The spelling of 28839212553 in words is "twenty-eight billion, eight hundred thirty-nine million, two hundred twelve thousand, five hundred fifty-three".