53212443408 has 120 divisors (see below), whose sum is σ = 157268809152. Its totient is φ = 16761786624.

The previous prime is 53212443397. The next prime is 53212443443. The reversal of 53212443408 is 80434421235.

53212443408 is a `hidden beast` number, since 5 + 3 + 2 + 1 + 244 + 3 + 408 = 666.

It is a super-3 number, since 3×53212443408³ (a number of 33 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

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 23 ways as a sum of consecutive naturals, for example, 178110 + ... + 371682.

Almost surely, 2^53212443408 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 53212443408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78634404576).

53212443408 is an abundant number, since it is smaller than the sum of its proper divisors (104056365744).

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

53212443408 is a wasteful number, since it uses less digits than its factorization.

53212443408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193693 (or 193684 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 36.

The spelling of 53212443408 in words is "fifty-three billion, two hundred twelve million, four hundred forty-three thousand, four hundred eight".