12870528705 has 96 divisors (see below), whose sum is σ = 23017737600. Its totient is φ = 6651196416.

The previous prime is 12870528689. The next prime is 12870528719. The reversal of 12870528705 is 50782507821.

It is not a de Polignac number, because 12870528705 - 2⁴ = 12870528689 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is an unprimeable number.

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 95 ways as a sum of consecutive naturals, for example, 71902306 + ... + 71902484.

It is an arithmetic number, because the mean of its divisors is an integer number (239768100).

Almost surely, 2^12870528705 is an apocalyptic number.

12870528705 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12870528705 is a deficient number, since it is larger than the sum of its proper divisors (10147208895).

12870528705 is a wasteful number, since it uses less digits than its factorization.

12870528705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 543 (or 540 counting only the distinct ones).

The product of its (nonzero) digits is 313600, while the sum is 45.

The spelling of 12870528705 in words is "twelve billion, eight hundred seventy million, five hundred twenty-eight thousand, seven hundred five".