28625711618 has 16 divisors (see below), whose sum is σ = 50116748544. Its totient is φ = 12007137120.

The previous prime is 28625711539. The next prime is 28625711629. The reversal of 28625711618 is 81611752682.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21751403 + ... + 21752718.

It is an arithmetic number, because the mean of its divisors is an integer number (3132296784).

Almost surely, 2^28625711618 is an apocalyptic number.

28625711618 is a deficient number, since it is larger than the sum of its proper divisors (21491036926).

28625711618 is a wasteful number, since it uses less digits than its factorization.

28625711618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43504177.

The product of its digits is 322560, while the sum is 47.

The spelling of 28625711618 in words is "twenty-eight billion, six hundred twenty-five million, seven hundred eleven thousand, six hundred eighteen".