17212105056 has 96 divisors (see below), whose sum is σ = 49489302240. Its totient is φ = 5213659136.

The previous prime is 17212105051. The next prime is 17212105069. The reversal of 17212105056 is 65050121271.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17212105051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 134511 + ... + 229166.

It is an arithmetic number, because the mean of its divisors is an integer number (515513565).

Almost surely, 2^17212105056 is an apocalyptic number.

17212105056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

17212105056 is an abundant number, since it is smaller than the sum of its proper divisors (32277197184).

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

17212105056 is a wasteful number, since it uses less digits than its factorization.

17212105056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363736 (or 363728 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 30.

The spelling of 17212105056 in words is "seventeen billion, two hundred twelve million, one hundred five thousand, fifty-six".