2175061204856 has 32 divisors (see below), whose sum is σ = 4274137821600. Its totient is φ = 1035704081280.

The previous prime is 2175061204781. The next prime is 2175061204871. The reversal of 2175061204856 is 6584021605712.

It is a super-3 number, since 3×2175061204856³ (a number of 38 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2175061204856.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25767875 + ... + 25852146.

It is an arithmetic number, because the mean of its divisors is an integer number (133566806925).

Almost surely, 2^{2175061204856} is an apocalyptic number.

It is an amenable number.

2175061204856 is a deficient number, since it is larger than the sum of its proper divisors (2099076616744).

2175061204856 is a wasteful number, since it uses less digits than its factorization.

2175061204856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51620279 (or 51620275 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 47.

The spelling of 2175061204856 in words is "two trillion, one hundred seventy-five billion, sixty-one million, two hundred four thousand, eight hundred fifty-six".