215135332466 has 8 divisors (see below), whose sum is σ = 322708364544. Its totient is φ = 107565877620.

The previous prime is 215135332441. The next prime is 215135332487. The reversal of 215135332466 is 664233531512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×215135332466² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 738530 + ... + 987773.

It is an arithmetic number, because the mean of its divisors is an integer number (40338545568).

Almost surely, 2^215135332466 is an apocalyptic number.

215135332466 is a deficient number, since it is larger than the sum of its proper divisors (107573032078).

215135332466 is a wasteful number, since it uses less digits than its factorization.

215135332466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1788616.

The product of its digits is 388800, while the sum is 41.

Adding to 215135332466 its reverse (664233531512), we get a palindrome (879368863978).

The spelling of 215135332466 in words is "two hundred fifteen billion, one hundred thirty-five million, three hundred thirty-two thousand, four hundred sixty-six".