212632079209889 has 4 divisors (see below), whose sum is σ = 214737347320980. Its totient is φ = 210526811098800.

The previous prime is 212632079209841. The next prime is 212632079209909. The reversal of 212632079209889 is 988902970236212.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 198499441974289 + 14132637235600 = 14088983^2 + 3759340^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212632079209889 is a prime.

It is a super-2 number, since 2×212632079209889² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212632079200889) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1052634055394 + ... + 1052634055595.

It is an arithmetic number, because the mean of its divisors is an integer number (53684336830245).

Almost surely, 2^{212632079209889} is an apocalyptic number.

It is an amenable number.

212632079209889 is a deficient number, since it is larger than the sum of its proper divisors (2105268111091).

212632079209889 is a wasteful number, since it uses less digits than its factorization.

212632079209889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2105268111090.

The product of its (nonzero) digits is 94058496, while the sum is 68.

The spelling of 212632079209889 in words is "two hundred twelve trillion, six hundred thirty-two billion, seventy-nine million, two hundred nine thousand, eight hundred eighty-nine".