28106432402499 has 48 divisors (see below), whose sum is σ = 46620957427200. Its totient is φ = 16137305352000.

The previous prime is 28106432402473. The next prime is 28106432402501. The reversal of 28106432402499 is 99420423460182.

28106432402499 is a `hidden beast` number, since 2 + 8 + 10 + 64 + 324 + 0 + 249 + 9 = 666.

It is a Cunningham number, because it is equal to 5301550²-1.

It is not a de Polignac number, because 28106432402499 - 2⁹ = 28106432401987 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28106432302499) 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 47 ways as a sum of consecutive naturals, for example, 100589917 + ... + 100868945.

It is an arithmetic number, because the mean of its divisors is an integer number (971269946400).

Almost surely, 2^{28106432402499} is an apocalyptic number.

28106432402499 is a deficient number, since it is larger than the sum of its proper divisors (18514525024701).

28106432402499 is a wasteful number, since it uses less digits than its factorization.

28106432402499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332616 (or 332613 counting only the distinct ones).

The product of its (nonzero) digits is 5971968, while the sum is 54.

The spelling of 28106432402499 in words is "twenty-eight trillion, one hundred six billion, four hundred thirty-two million, four hundred two thousand, four hundred ninety-nine".