213360232646 has 64 divisors (see below), whose sum is σ = 359858847744. Its totient is φ = 94043632800.

The previous prime is 213360232639. The next prime is 213360232667. The reversal of 213360232646 is 646232063312.

It is a super-2 number, since 2×213360232646² (a number of 23 digits) contains 22 as substring.

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 31 ways as a sum of consecutive naturals, for example, 160783235 + ... + 160784561.

It is an arithmetic number, because the mean of its divisors is an integer number (5622794496).

Almost surely, 2^213360232646 is an apocalyptic number.

213360232646 is a deficient number, since it is larger than the sum of its proper divisors (146498615098).

213360232646 is a wasteful number, since it uses less digits than its factorization.

213360232646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2705.

The product of its (nonzero) digits is 186624, while the sum is 38.

Adding to 213360232646 its reverse (646232063312), we get a palindrome (859592295958).

The spelling of 213360232646 in words is "two hundred thirteen billion, three hundred sixty million, two hundred thirty-two thousand, six hundred forty-six".