8129248856 has 16 divisors (see below), whose sum is σ = 15245472840. Its totient is φ = 4063789440.

The previous prime is 8129248847. The next prime is 8129248859. The reversal of 8129248856 is 6588429218.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 8129248798 and 8129248807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8129248859) 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 3 ways as a sum of consecutive naturals, for example, 61985 + ... + 141776.

Almost surely, 2^8129248856 is an apocalyptic number.

It is an amenable number.

8129248856 is a deficient number, since it is larger than the sum of its proper divisors (7116223984).

8129248856 is a wasteful number, since it uses less digits than its factorization.

8129248856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208754 (or 208750 counting only the distinct ones).

The product of its digits is 2211840, while the sum is 53.

The square root of 8129248856 is about 90162.3472187809. The cubic root of 8129248856 is about 2010.7132486847.

The spelling of 8129248856 in words is "eight billion, one hundred twenty-nine million, two hundred forty-eight thousand, eight hundred fifty-six".