217629105290 has 16 divisors (see below), whose sum is σ = 392386377600. Its totient is φ = 86906311440.

The previous prime is 217629105271. The next prime is 217629105329. The reversal of 217629105290 is 92501926712.

217629105290 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18160046 + ... + 18172025.

It is an arithmetic number, because the mean of its divisors is an integer number (24524148600).

Almost surely, 2^217629105290 is an apocalyptic number.

217629105290 is a deficient number, since it is larger than the sum of its proper divisors (174757272310).

217629105290 is a wasteful number, since it uses less digits than its factorization.

217629105290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36332677.

The product of its (nonzero) digits is 136080, while the sum is 44.

The spelling of 217629105290 in words is "two hundred seventeen billion, six hundred twenty-nine million, one hundred five thousand, two hundred ninety".