212667693756 has 48 divisors (see below), whose sum is σ = 579180112896. Its totient is φ = 59469384384.

The previous prime is 212667693743. The next prime is 212667693781. The reversal of 212667693756 is 657396766212.

It is a self number, because there is not a number n which added to its sum of digits gives 212667693756.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26929651 + ... + 26937546.

It is an arithmetic number, because the mean of its divisors is an integer number (12066252352).

Almost surely, 2^212667693756 is an apocalyptic number.

It is an amenable number.

212667693756 is an abundant number, since it is smaller than the sum of its proper divisors (366512419140).

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

212667693756 is a wasteful number, since it uses less digits than its factorization.

212667693756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53867258 (or 53867256 counting only the distinct ones).

The product of its digits is 34292160, while the sum is 60.

The spelling of 212667693756 in words is "two hundred twelve billion, six hundred sixty-seven million, six hundred ninety-three thousand, seven hundred fifty-six".