212154546552 has 64 divisors (see below), whose sum is σ = 584468734080. Its totient is φ = 63760217472.

The previous prime is 212154546529. The next prime is 212154546559. The reversal of 212154546552 is 255645451212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212154546559) 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, 7893358 + ... + 7920189.

It is an arithmetic number, because the mean of its divisors is an integer number (9132323970).

Almost surely, 2^212154546552 is an apocalyptic number.

It is an amenable number.

212154546552 is an abundant number, since it is smaller than the sum of its proper divisors (372314187528).

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

212154546552 is a wasteful number, since it uses less digits than its factorization.

212154546552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15813612 (or 15813608 counting only the distinct ones).

The product of its digits is 480000, while the sum is 42.

Adding to 212154546552 its reverse (255645451212), we get a palindrome (467799997764).

The spelling of 212154546552 in words is "two hundred twelve billion, one hundred fifty-four million, five hundred forty-six thousand, five hundred fifty-two".