212019385564 has 72 divisors (see below), whose sum is σ = 434172520320. Its totient is φ = 90327744864.

The previous prime is 212019385511. The next prime is 212019385573. The reversal of 212019385564 is 465583910212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24346099 + ... + 24354805.

Almost surely, 2^212019385564 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212019385564, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (217086260160).

212019385564 is an abundant number, since it is smaller than the sum of its proper divisors (222153134756).

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

212019385564 is a wasteful number, since it uses less digits than its factorization.

212019385564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9447 (or 9438 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 46.

The spelling of 212019385564 in words is "two hundred twelve billion, nineteen million, three hundred eighty-five thousand, five hundred sixty-four".