217348490044 has 24 divisors (see below), whose sum is σ = 445299347808. Its totient is φ = 90877416960.

The previous prime is 217348489973. The next prime is 217348490111. The reversal of 217348490044 is 440094843712.

217348490044 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×217348490044² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 217348489976 and 217348490003.

It is a congruent number.

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, 94662829 + ... + 94665124.

It is an arithmetic number, because the mean of its divisors is an integer number (18554139492).

Almost surely, 2^217348490044 is an apocalyptic number.

It is an amenable number.

217348490044 is an abundant number, since it is smaller than the sum of its proper divisors (227950857764).

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

217348490044 is a wasteful number, since it uses less digits than its factorization.

217348490044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189328005 (or 189328003 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 46.

The spelling of 217348490044 in words is "two hundred seventeen billion, three hundred forty-eight million, four hundred ninety thousand, forty-four".