212451253533 has 24 divisors (see below), whose sum is σ = 317267648256. Its totient is φ = 136851379200.

The previous prime is 212451253517. The next prime is 212451253589. The reversal of 212451253533 is 335352154212.

212451253533 is a `hidden beast` number, since 2 + 1 + 24 + 51 + 2 + 53 + 533 = 666.

It is not a de Polignac number, because 212451253533 - 2⁴ = 212451253517 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212451253513) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 415135 + ... + 772812.

It is an arithmetic number, because the mean of its divisors is an integer number (13219485344).

Almost surely, 2^212451253533 is an apocalyptic number.

It is an amenable number.

212451253533 is a deficient number, since it is larger than the sum of its proper divisors (104816394723).

212451253533 is a wasteful number, since it uses less digits than its factorization.

212451253533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1188625 (or 1188622 counting only the distinct ones).

The product of its digits is 108000, while the sum is 36.

The spelling of 212451253533 in words is "two hundred twelve billion, four hundred fifty-one million, two hundred fifty-three thousand, five hundred thirty-three".