212065556555 has 12 divisors (see below), whose sum is σ = 262952469216. Its totient is φ = 164179782000.

The previous prime is 212065556543. The next prime is 212065556561. The reversal of 212065556555 is 555655560212.

It is not a de Polignac number, because 212065556555 - 2⁶ = 212065556491 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22062371 + ... + 22071980.

It is an arithmetic number, because the mean of its divisors is an integer number (21912705768).

Almost surely, 2^212065556555 is an apocalyptic number.

212065556555 is a deficient number, since it is larger than the sum of its proper divisors (50886912661).

212065556555 is an equidigital number, since it uses as much as digits as its factorization.

212065556555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44134418 (or 44134387 counting only the distinct ones).

The product of its (nonzero) digits is 2250000, while the sum is 47.

The spelling of 212065556555 in words is "two hundred twelve billion, sixty-five million, five hundred fifty-six thousand, five hundred fifty-five".