53021135412 has 144 divisors (see below), whose sum is σ = 160219120320. Its totient is φ = 15119141184.

The previous prime is 53021135407. The next prime is 53021135413. The reversal of 53021135412 is 21453112035.

53021135412 is a `hidden beast` number, since 5 + 3 + 0 + 2 + 113 + 541 + 2 = 666.

It is a super-2 number, since 2×53021135412² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53021135413) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2758138 + ... + 2777294.

It is an arithmetic number, because the mean of its divisors is an integer number (1112632780).

Almost surely, 2^53021135412 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 53021135412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80109560160).

53021135412 is an abundant number, since it is smaller than the sum of its proper divisors (107197984908).

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

53021135412 is a wasteful number, since it uses less digits than its factorization.

53021135412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19707 (or 19692 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

Adding to 53021135412 its reverse (21453112035), we get a palindrome (74474247447).

The spelling of 53021135412 in words is "fifty-three billion, twenty-one million, one hundred thirty-five thousand, four hundred twelve".