8129212480 has 28 divisors (see below), whose sum is σ = 19357687980. Its totient is φ = 3251684864.

The previous prime is 8129212471. The next prime is 8129212499. The reversal of 8129212480 is 842129218.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 4541681664 + 3587530816 = 67392^2 + 59896^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12701575 + ... + 12702214.

Almost surely, 2^8129212480 is an apocalyptic number.

8129212480 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8129212480 is an abundant number, since it is smaller than the sum of its proper divisors (11228475500).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8129212480 is a wasteful number, since it uses less digits than its factorization.

8129212480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25403806 (or 25403796 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 37.

The square root of 8129212480 is about 90162.1454935496. The cubic root of 8129212480 is about 2010.7102495632.

The spelling of 8129212480 in words is "eight billion, one hundred twenty-nine million, two hundred twelve thousand, four hundred eighty".