213104334111656 has 32 divisors (see below), whose sum is σ = 452954556314400. Its totient is φ = 93179223011520.

The previous prime is 213104334111649. The next prime is 213104334111679. The reversal of 213104334111656 is 656111433401312.

It is a super-2 number, since 2×213104334111656² (a number of 29 digits) contains 22 as substring.

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, 53923159490 + ... + 53923163441.

It is an arithmetic number, because the mean of its divisors is an integer number (14154829884825).

Almost surely, 2^{213104334111656} is an apocalyptic number.

213104334111656 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

213104334111656 is an abundant number, since it is smaller than the sum of its proper divisors (239850222202744).

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

213104334111656 is a wasteful number, since it uses less digits than its factorization.

213104334111656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107846322969 (or 107846322965 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 41.

Adding to 213104334111656 its reverse (656111433401312), we get a palindrome (869215767512968).

The spelling of 213104334111656 in words is "two hundred thirteen trillion, one hundred four billion, three hundred thirty-four million, one hundred eleven thousand, six hundred fifty-six".