8125776665600 has 132 divisors (see below), whose sum is σ = 21973185841128. Its totient is φ = 2954827776000.

The previous prime is 8125776665549. The next prime is 8125776665621. The reversal of 8125776665600 is 65666775218.

It is a self number, because there is not a number n which added to its sum of digits gives 8125776665600.

It is a congruent number.

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 in 11 ways as a sum of consecutive naturals, for example, 14146271 + ... + 14709470.

Almost surely, 2^{8125776665600} is an apocalyptic number.

8125776665600 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8125776665600 is an abundant number, since it is smaller than the sum of its proper divisors (13847409175528).

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

8125776665600 is a wasteful number, since it uses less digits than its factorization.

8125776665600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28855782 (or 28855759 counting only the distinct ones).

The product of its (nonzero) digits is 25401600, while the sum is 59.

The spelling of 8125776665600 in words is "eight trillion, one hundred twenty-five billion, seven hundred seventy-six million, six hundred sixty-five thousand, six hundred".