28153039664 has 20 divisors (see below), whose sum is σ = 55876918440. Its totient is φ = 13733189760.

The previous prime is 28153039661. The next prime is 28153039723. The reversal of 28153039664 is 46693035182.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (28153039661) 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, 21457454 + ... + 21458765.

It is an arithmetic number, because the mean of its divisors is an integer number (2793845922).

Almost surely, 2^28153039664 is an apocalyptic number.

It is an amenable number.

28153039664 is a deficient number, since it is larger than the sum of its proper divisors (27723878776).

28153039664 is a wasteful number, since it uses less digits than its factorization.

28153039664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42916268 (or 42916262 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 47.

The spelling of 28153039664 in words is "twenty-eight billion, one hundred fifty-three million, thirty-nine thousand, six hundred sixty-four".