28505012724106 has 16 divisors (see below), whose sum is σ = 42954193305216. Its totient is φ = 14186972602656.

The previous prime is 28505012724101. The next prime is 28505012724179. The reversal of 28505012724106 is 60142721050582.

It is not an unprimeable number, because it can be changed into a prime (28505012724101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3729891 + ... + 8421526.

It is an arithmetic number, because the mean of its divisors is an integer number (2684637081576).

Almost surely, 2^{28505012724106} is an apocalyptic number.

28505012724106 is a deficient number, since it is larger than the sum of its proper divisors (14449180581110).

28505012724106 is a wasteful number, since it uses less digits than its factorization.

28505012724106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12156813.

The product of its (nonzero) digits is 268800, while the sum is 43.

Adding to 28505012724106 its reverse (60142721050582), we get a palindrome (88647733774688).

The spelling of 28505012724106 in words is "twenty-eight trillion, five hundred five billion, twelve million, seven hundred twenty-four thousand, one hundred six".