217423085308 has 36 divisors (see below), whose sum is σ = 449465812488. Its totient is φ = 91226466240.

The previous prime is 217423085279. The next prime is 217423085357. The reversal of 217423085308 is 803580324712.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14612191 + ... + 14627062.

It is an arithmetic number, because the mean of its divisors is an integer number (12485161458).

Almost surely, 2^217423085308 is an apocalyptic number.

It is an amenable number.

217423085308 is an abundant number, since it is smaller than the sum of its proper divisors (232042727180).

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

217423085308 is a wasteful number, since it uses less digits than its factorization.

217423085308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29239294 (or 29239279 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 43.

The spelling of 217423085308 in words is "two hundred seventeen billion, four hundred twenty-three million, eighty-five thousand, three hundred eight".