212664106340 has 48 divisors (see below), whose sum is σ = 521253315072. Its totient is φ = 71362056576.

The previous prime is 212664106309. The next prime is 212664106373. The reversal of 212664106340 is 43601466212.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 212664106340.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16153307 + ... + 16166466.

It is an arithmetic number, because the mean of its divisors is an integer number (10859444064).

Almost surely, 2^212664106340 is an apocalyptic number.

212664106340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212664106340 is an abundant number, since it is smaller than the sum of its proper divisors (308589208732).

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

212664106340 is a wasteful number, since it uses less digits than its factorization.

212664106340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32319836 (or 32319834 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 35.

The spelling of 212664106340 in words is "two hundred twelve billion, six hundred sixty-four million, one hundred six thousand, three hundred forty".