212270851968 has 128 divisors (see below), whose sum is σ = 682299313920. Its totient is φ = 57081225216.

The previous prime is 212270851967. The next prime is 212270852039. The reversal of 212270851968 is 869158072212.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a self number, because there is not a number n which added to its sum of digits gives 212270851968.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212270851967) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2276946 + ... + 2368337.

It is an arithmetic number, because the mean of its divisors is an integer number (5330463390).

Almost surely, 2^212270851968 is an apocalyptic number.

212270851968 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

212270851968 is an abundant number, since it is smaller than the sum of its proper divisors (470028461952).

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

212270851968 is a wasteful number, since it uses less digits than its factorization.

212270851968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4645324 (or 4645312 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 51.

The spelling of 212270851968 in words is "two hundred twelve billion, two hundred seventy million, eight hundred fifty-one thousand, nine hundred sixty-eight".