212130955519618 has 8 divisors (see below), whose sum is σ = 336913870531212. Its totient is φ = 99826332009216.

The previous prime is 212130955519583. The next prime is 212130955519619. The reversal of 212130955519618 is 816915559031212.

It can be written as a sum of positive squares in 2 ways, for example, as 207201831773049 + 4929123746569 = 14394507^2 + 2220163^2 .

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

It is not an unprimeable number, because it can be changed into a prime (212130955519619) 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, 3119572875255 + ... + 3119572875322.

Almost surely, 2^{212130955519618} is an apocalyptic number.

212130955519618 is a deficient number, since it is larger than the sum of its proper divisors (124782915011594).

212130955519618 is a wasteful number, since it uses less digits than its factorization.

212130955519618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6239145750596.

The product of its (nonzero) digits is 5832000, while the sum is 58.

The spelling of 212130955519618 in words is "two hundred twelve trillion, one hundred thirty billion, nine hundred fifty-five million, five hundred nineteen thousand, six hundred eighteen".