28755161729 has 32 divisors (see below), whose sum is σ = 35545443840. Its totient is φ = 22717094400.

The previous prime is 28755161723. The next prime is 28755161737. The reversal of 28755161729 is 92716155782.

It is not a de Polignac number, because 28755161729 - 2⁸ = 28755161473 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28755161723) 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 31 ways as a sum of consecutive naturals, for example, 2426639 + ... + 2438459.

It is an arithmetic number, because the mean of its divisors is an integer number (1110795120).

Almost surely, 2^28755161729 is an apocalyptic number.

28755161729 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

28755161729 is a deficient number, since it is larger than the sum of its proper divisors (6790282111).

28755161729 is a wasteful number, since it uses less digits than its factorization.

28755161729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12401.

The product of its digits is 2116800, while the sum is 53.

The spelling of 28755161729 in words is "twenty-eight billion, seven hundred fifty-five million, one hundred sixty-one thousand, seven hundred twenty-nine".