217468553660 has 12 divisors (see below), whose sum is σ = 456683962728. Its totient is φ = 86987421456.

The previous prime is 217468553657. The next prime is 217468553683. The reversal of 217468553660 is 66355864712.

It is a happy number.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 5436713822 + ... + 5436713861.

It is an arithmetic number, because the mean of its divisors is an integer number (38056996894).

Almost surely, 2^217468553660 is an apocalyptic number.

217468553660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

217468553660 is an abundant number, since it is smaller than the sum of its proper divisors (239215409068).

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

217468553660 is a wasteful number, since it uses less digits than its factorization.

217468553660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10873427692 (or 10873427690 counting only the distinct ones).

The product of its (nonzero) digits is 7257600, while the sum is 53.

The spelling of 217468553660 in words is "two hundred seventeen billion, four hundred sixty-eight million, five hundred fifty-three thousand, six hundred sixty".