212132621173646 has 8 divisors (see below), whose sum is σ = 318202376606400. Its totient is φ = 106065162304848.

The previous prime is 212132621173633. The next prime is 212132621173691. The reversal of 212132621173646 is 646371126231212.

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

It is a self number, because there is not a number n which added to its sum of digits gives 212132621173646.

It is a congruent number.

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, 573910046 + ... + 574279553.

It is an arithmetic number, because the mean of its divisors is an integer number (39775297075800).

Almost surely, 2^{212132621173646} is an apocalyptic number.

212132621173646 is a deficient number, since it is larger than the sum of its proper divisors (106069755432754).

212132621173646 is a wasteful number, since it uses less digits than its factorization.

212132621173646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1148281978.

The product of its digits is 870912, while the sum is 47.

The spelling of 212132621173646 in words is "two hundred twelve trillion, one hundred thirty-two billion, six hundred twenty-one million, one hundred seventy-three thousand, six hundred forty-six".