212664525533420 has 24 divisors (see below), whose sum is σ = 452713250248224. Its totient is φ = 83900525141376.

The previous prime is 212664525533377. The next prime is 212664525533429. The reversal of 212664525533420 is 24335525466212.

It is not an unprimeable number, because it can be changed into a prime (212664525533429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72830315504 + ... + 72830318423.

It is an arithmetic number, because the mean of its divisors is an integer number (18863052093676).

Almost surely, 2^{212664525533420} is an apocalyptic number.

212664525533420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212664525533420 is an abundant number, since it is smaller than the sum of its proper divisors (240048724714804).

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

212664525533420 is a wasteful number, since it uses less digits than its factorization.

212664525533420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145660634009 (or 145660634007 counting only the distinct ones).

The product of its (nonzero) digits is 10368000, while the sum is 50.

The spelling of 212664525533420 in words is "two hundred twelve trillion, six hundred sixty-four billion, five hundred twenty-five million, five hundred thirty-three thousand, four hundred twenty".