212640183305 has 16 divisors (see below), whose sum is σ = 293016139200. Its totient is φ = 146508068160.

The previous prime is 212640183251. The next prime is 212640183317. The reversal of 212640183305 is 503381046212.

It is not a de Polignac number, because 212640183305 - 2¹⁶ = 212640117769 is a prime.

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, 101740670 + ... + 101742759.

It is an arithmetic number, because the mean of its divisors is an integer number (18313508700).

Almost surely, 2^212640183305 is an apocalyptic number.

It is an amenable number.

212640183305 is a deficient number, since it is larger than the sum of its proper divisors (80375955895).

212640183305 is a wasteful number, since it uses less digits than its factorization.

212640183305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203483464.

The product of its (nonzero) digits is 34560, while the sum is 35.

The spelling of 212640183305 in words is "two hundred twelve billion, six hundred forty million, one hundred eighty-three thousand, three hundred five".