28660141111 has 24 divisors (see below), whose sum is σ = 34456264704. Its totient is φ = 23744755440.

The previous prime is 28660141061. The next prime is 28660141117. The reversal of 28660141111 is 11114106682.

It is not a de Polignac number, because 28660141111 - 2¹¹ = 28660139063 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28660141117) 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 23 ways as a sum of consecutive naturals, for example, 1299966 + ... + 1321828.

It is an arithmetic number, because the mean of its divisors is an integer number (1435677696).

Almost surely, 2^28660141111 is an apocalyptic number.

28660141111 is a deficient number, since it is larger than the sum of its proper divisors (5796123593).

28660141111 is a wasteful number, since it uses less digits than its factorization.

28660141111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22771 (or 22764 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 31.

Adding to 28660141111 its reverse (11114106682), we get a palindrome (39774247793).

The spelling of 28660141111 in words is "twenty-eight billion, six hundred sixty million, one hundred forty-one thousand, one hundred eleven".