217133359380 has 144 divisors (see below), whose sum is σ = 778685281920. Its totient is φ = 47919078144.

The previous prime is 217133359321. The next prime is 217133359411. The reversal of 217133359380 is 83953331712.

217133359380 is a `hidden beast` number, since 2 + 17 + 13 + 33 + 593 + 8 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2934634 + ... + 3007713.

It is an arithmetic number, because the mean of its divisors is an integer number (5407536680).

Almost surely, 2^217133359380 is an apocalyptic number.

217133359380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

217133359380 is an abundant number, since it is smaller than the sum of its proper divisors (561551922540).

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

217133359380 is a wasteful number, since it uses less digits than its factorization.

217133359380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5942398 (or 5942393 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 45.

The spelling of 217133359380 in words is "two hundred seventeen billion, one hundred thirty-three million, three hundred fifty-nine thousand, three hundred eighty".