28013051618 has 16 divisors (see below), whose sum is σ = 44374792896. Its totient is φ = 13236128400.

The previous prime is 28013051617. The next prime is 28013051669. The reversal of 28013051618 is 81615031082.

It is not an unprimeable number, because it can be changed into a prime (28013051617) 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 7 ways as a sum of consecutive naturals, for example, 3664733 + ... + 3672368.

It is an arithmetic number, because the mean of its divisors is an integer number (2773424556).

Almost surely, 2^28013051618 is an apocalyptic number.

28013051618 is a deficient number, since it is larger than the sum of its proper divisors (16361741278).

28013051618 is a wasteful number, since it uses less digits than its factorization.

28013051618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7337209.

The product of its (nonzero) digits is 11520, while the sum is 35.

The spelling of 28013051618 in words is "twenty-eight billion, thirteen million, fifty-one thousand, six hundred eighteen".