28101083507 has 4 divisors (see below), whose sum is σ = 32115524016. Its totient is φ = 24086643000.

The previous prime is 28101083489. The next prime is 28101083513. The reversal of 28101083507 is 70538010182.

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

It is not a de Polignac number, because 28101083507 - 2²⁶ = 28033974643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28101083537) 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 3 ways as a sum of consecutive naturals, for example, 2007220244 + ... + 2007220257.

It is an arithmetic number, because the mean of its divisors is an integer number (8028881004).

Almost surely, 2^28101083507 is an apocalyptic number.

28101083507 is a deficient number, since it is larger than the sum of its proper divisors (4014440509).

28101083507 is an equidigital number, since it uses as much as digits as its factorization.

28101083507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4014440508.

The product of its (nonzero) digits is 13440, while the sum is 35.

Adding to 28101083507 its reverse (70538010182), we get a palindrome (98639093689).

The spelling of 28101083507 in words is "twenty-eight billion, one hundred one million, eighty-three thousand, five hundred seven".