212538071808 has 108 divisors (see below), whose sum is σ = 627051104680. Its totient is φ = 69198409728.

The previous prime is 212538071797. The next prime is 212538071831. The reversal of 212538071808 is 808170835212.

212538071808 is a `hidden beast` number, since 2 + 125 + 380 + 71 + 80 + 8 = 666.

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, 973573 + ... + 1171716.

Almost surely, 2^212538071808 is an apocalyptic number.

It is an amenable number.

212538071808 is an abundant number, since it is smaller than the sum of its proper divisors (414513032872).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212538071808 is a wasteful number, since it uses less digits than its factorization.

212538071808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2145354 (or 2145337 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 45.

The spelling of 212538071808 in words is "two hundred twelve billion, five hundred thirty-eight million, seventy-one thousand, eight hundred eight".