217087053468 has 24 divisors (see below), whose sum is σ = 506543994768. Its totient is φ = 72361274496.

The previous prime is 217087053437. The next prime is 217087053479. The reversal of 217087053468 is 864350780712.

217087053468 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 217087053468.

It is a congruent number.

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, 1489080 + ... + 1628352.

It is an arithmetic number, because the mean of its divisors is an integer number (21105999782).

Almost surely, 2^217087053468 is an apocalyptic number.

It is an amenable number.

217087053468 is an abundant number, since it is smaller than the sum of its proper divisors (289456941300).

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

217087053468 is a wasteful number, since it uses less digits than its factorization.

217087053468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269173 (or 269171 counting only the distinct ones).

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

The spelling of 217087053468 in words is "two hundred seventeen billion, eighty-seven million, fifty-three thousand, four hundred sixty-eight".