28540542165 has 8 divisors (see below), whose sum is σ = 45664867488. Its totient is φ = 15221622480.

The previous prime is 28540542139. The next prime is 28540542169. The reversal of 28540542165 is 56124504582.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28540542165 - 2¹² = 28540538069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28540542169) 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 7 ways as a sum of consecutive naturals, for example, 951351391 + ... + 951351420.

It is an arithmetic number, because the mean of its divisors is an integer number (5708108436).

Almost surely, 2^28540542165 is an apocalyptic number.

It is an amenable number.

28540542165 is a deficient number, since it is larger than the sum of its proper divisors (17124325323).

28540542165 is a wasteful number, since it uses less digits than its factorization.

28540542165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1902702819.

The product of its (nonzero) digits is 384000, while the sum is 42.

The spelling of 28540542165 in words is "twenty-eight billion, five hundred forty million, five hundred forty-two thousand, one hundred sixty-five".