129106782848 has 16 divisors (see below), whose sum is σ = 257204919210. Its totient is φ = 64553391360.

The previous prime is 129106782823. The next prime is 129106782853. The reversal of 129106782848 is 848287601921.

It can be written as a sum of positive squares in only one way, i.e., 125888716864 + 3218065984 = 354808^2 + 56728^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a super-2 number, since 2×129106782848² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 129106782793 and 129106782802.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 504323243 + ... + 504323498.

Almost surely, 2^129106782848 is an apocalyptic number.

It is an amenable number.

129106782848 is a deficient number, since it is larger than the sum of its proper divisors (128098136362).

129106782848 is an equidigital number, since it uses as much as digits as its factorization.

129106782848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1008646755 (or 1008646743 counting only the distinct ones).

The product of its (nonzero) digits is 3096576, while the sum is 56.

The spelling of 129106782848 in words is "one hundred twenty-nine billion, one hundred six million, seven hundred eighty-two thousand, eight hundred forty-eight".