212665016754 has 96 divisors (see below), whose sum is σ = 480013357824. Its totient is φ = 70566733440.

The previous prime is 212665016749. The next prime is 212665016791. The reversal of 212665016754 is 457610566212.

212665016754 is a `hidden beast` number, since 2 + 12 + 66 + 501 + 6 + 75 + 4 = 666.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 172757319 + ... + 172758549.

It is an arithmetic number, because the mean of its divisors is an integer number (5000139144).

Almost surely, 2^212665016754 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212665016754, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (240006678912).

212665016754 is an abundant number, since it is smaller than the sum of its proper divisors (267348341070).

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

212665016754 is a wasteful number, since it uses less digits than its factorization.

212665016754 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2574 (or 2562 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 45.

The spelling of 212665016754 in words is "two hundred twelve billion, six hundred sixty-five million, sixteen thousand, seven hundred fifty-four".