53631081072 has 100 divisors (see below), whose sum is σ = 155476999480. Its totient is φ = 17847879552.

The previous prime is 53631081043. The next prime is 53631081073. The reversal of 53631081072 is 27018013635.

53631081072 is a `hidden beast` number, since 5 + 3 + 631 + 0 + 8 + 10 + 7 + 2 = 666.

53631081072 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53631081073) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 768798 + ... + 835650.

Almost surely, 2^53631081072 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 53631081072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77738499740).

53631081072 is an abundant number, since it is smaller than the sum of its proper divisors (101845918408).

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

53631081072 is a wasteful number, since it uses less digits than its factorization.

53631081072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67492 (or 67477 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The spelling of 53631081072 in words is "fifty-three billion, six hundred thirty-one million, eighty-one thousand, seventy-two".