212664556562615 has 16 divisors (see below), whose sum is σ = 258450692736000. Its totient is φ = 167963209962912.

The previous prime is 212664556562539. The next prime is 212664556562681. The reversal of 212664556562615 is 516265655466212.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 212664556562615 - 2¹⁴ = 212664556546231 is a prime.

It is a congruent number.

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, 19361627 + ... + 28287836.

It is an arithmetic number, because the mean of its divisors is an integer number (16153168296000).

Almost surely, 2^{212664556562615} is an apocalyptic number.

212664556562615 is a deficient number, since it is larger than the sum of its proper divisors (45786136173385).

212664556562615 is a wasteful number, since it uses less digits than its factorization.

212664556562615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47660846.

The product of its digits is 155520000, while the sum is 62.

The spelling of 212664556562615 in words is "two hundred twelve trillion, six hundred sixty-four billion, five hundred fifty-six million, five hundred sixty-two thousand, six hundred fifteen".