212265087578 has 8 divisors (see below), whose sum is σ = 326163427380. Its totient is φ = 103543945120.

The previous prime is 212265087577. The next prime is 212265087581. The reversal of 212265087578 is 875780562212.

It can be written as a sum of positive squares in 2 ways, for example, as 168762391249 + 43502696329 = 410807^2 + 208573^2 .

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 (212265087577) 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, 1294299233 + ... + 1294299396.

Almost surely, 2^212265087578 is an apocalyptic number.

212265087578 is a deficient number, since it is larger than the sum of its proper divisors (113898339802).

212265087578 is a wasteful number, since it uses less digits than its factorization.

212265087578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2588598672.

The product of its (nonzero) digits is 3763200, while the sum is 53.

The spelling of 212265087578 in words is "two hundred twelve billion, two hundred sixty-five million, eighty-seven thousand, five hundred seventy-eight".