28109625411 has 64 divisors (see below), whose sum is σ = 46262476800. Its totient is φ = 14825534976.

The previous prime is 28109625403. The next prime is 28109625463. The reversal of 28109625411 is 11452690182.

It is not a de Polignac number, because 28109625411 - 2³ = 28109625403 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28109625411.

It is not an unprimeable number, because it can be changed into a prime (28109625911) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2654850 + ... + 2665416.

It is an arithmetic number, because the mean of its divisors is an integer number (722851200).

Almost surely, 2^28109625411 is an apocalyptic number.

28109625411 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

28109625411 is a deficient number, since it is larger than the sum of its proper divisors (18152851389).

28109625411 is a wasteful number, since it uses less digits than its factorization.

28109625411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10768.

The product of its (nonzero) digits is 34560, while the sum is 39.

The spelling of 28109625411 in words is "twenty-eight billion, one hundred nine million, six hundred twenty-five thousand, four hundred eleven".