212606915808 has 48 divisors (see below), whose sum is σ = 637820749440. Its totient is φ = 60744832896.

The previous prime is 212606915779. The next prime is 212606915819. The reversal of 212606915808 is 808519606212.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 158188998 + ... + 158190341.

It is an arithmetic number, because the mean of its divisors is an integer number (13287932280).

Almost surely, 2^212606915808 is an apocalyptic number.

212606915808 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

212606915808 is an abundant number, since it is smaller than the sum of its proper divisors (425213833632).

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

212606915808 is a wasteful number, since it uses less digits than its factorization.

212606915808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316379359 (or 316379351 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 48.

The spelling of 212606915808 in words is "two hundred twelve billion, six hundred six million, nine hundred fifteen thousand, eight hundred eight".