212605145626 has 8 divisors (see below), whose sum is σ = 324924845364. Its totient is φ = 104296863840.

The previous prime is 212605145617. The next prime is 212605145653. The reversal of 212605145626 is 626541506212.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 209122375401 + 3482770225 = 457299^2 + 59015^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1002854355 + ... + 1002854566.

Almost surely, 2^212605145626 is an apocalyptic number.

212605145626 is a deficient number, since it is larger than the sum of its proper divisors (112319699738).

212605145626 is a wasteful number, since it uses less digits than its factorization.

212605145626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2005708976.

The product of its (nonzero) digits is 172800, while the sum is 40.

The spelling of 212605145626 in words is "two hundred twelve billion, six hundred five million, one hundred forty-five thousand, six hundred twenty-six".