17212128657234 has 16 divisors (see below), whose sum is σ = 39342008359488. Its totient is φ = 4917751044912.

The previous prime is 17212128657223. The next prime is 17212128657257. The reversal of 17212128657234 is 43275682121271.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 204906293497 + ... + 204906293580.

It is an arithmetic number, because the mean of its divisors is an integer number (2458875522468).

Almost surely, 2^{17212128657234} is an apocalyptic number.

17212128657234 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

17212128657234 is an abundant number, since it is smaller than the sum of its proper divisors (22129879702254).

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

17212128657234 is a wasteful number, since it uses less digits than its factorization.

17212128657234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409812587089.

The product of its digits is 2257920, while the sum is 51.

The spelling of 17212128657234 in words is "seventeen trillion, two hundred twelve billion, one hundred twenty-eight million, six hundred fifty-seven thousand, two hundred thirty-four".