17212898820 has 192 divisors, whose sum is σ = 55181419776. Its totient is φ = 3971481600.

The previous prime is 17212898819. The next prime is 17212898851. The reversal of 17212898820 is 2889821271.

It is a self number, because there is not a number n which added to its sum of digits gives 17212898820.

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 63 ways as a sum of consecutive naturals, for example, 3405295 + ... + 3410345.

It is an arithmetic number, because the mean of its divisors is an integer number (287403228).

Almost surely, 2^17212898820 is an apocalyptic number.

17212898820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 17212898820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27590709888).

17212898820 is an abundant number, since it is smaller than the sum of its proper divisors (37968520956).

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

17212898820 is a wasteful number, since it uses less digits than its factorization.

17212898820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5350 (or 5348 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 48.

The spelling of 17212898820 in words is "seventeen billion, two hundred twelve million, eight hundred ninety-eight thousand, eight hundred twenty".