28665284501 has 4 divisors (see below), whose sum is σ = 32760325152. Its totient is φ = 24570243852.

The previous prime is 28665284467. The next prime is 28665284513. The reversal of 28665284501 is 10548256682.

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 28665284501 - 2²² = 28661090197 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 (28665284551) 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, 2047520315 + ... + 2047520328.

It is an arithmetic number, because the mean of its divisors is an integer number (8190081288).

Almost surely, 2^28665284501 is an apocalyptic number.

It is an amenable number.

28665284501 is a deficient number, since it is larger than the sum of its proper divisors (4095040651).

28665284501 is an equidigital number, since it uses as much as digits as its factorization.

28665284501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4095040650.

The product of its (nonzero) digits is 921600, while the sum is 47.

The spelling of 28665284501 in words is "twenty-eight billion, six hundred sixty-five million, two hundred eighty-four thousand, five hundred one".