53631205212 has 72 divisors (see below), whose sum is σ = 136639103664. Its totient is φ = 16275603456.

The previous prime is 53631205207. The next prime is 53631205223. The reversal of 53631205212 is 21250213635.

It is a self number, because there is not a number n which added to its sum of digits gives 53631205212.

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, 799068 + ... + 863580.

Almost surely, 2^53631205212 is an apocalyptic number.

53631205212 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53631205212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68319551832).

53631205212 is an abundant number, since it is smaller than the sum of its proper divisors (83007898452).

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

53631205212 is a wasteful number, since it uses less digits than its factorization.

53631205212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64679 (or 64604 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 30.

Adding to 53631205212 its reverse (21250213635), we get a palindrome (74881418847).

The spelling of 53631205212 in words is "fifty-three billion, six hundred thirty-one million, two hundred five thousand, two hundred twelve".