53421171072 has 256 divisors, whose sum is σ = 150303625920. Its totient is φ = 16792289280.

The previous prime is 53421171047. The next prime is 53421171079. The reversal of 53421171072 is 27017112435.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53421171079) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 60913098 + ... + 60913974.

Almost surely, 2^53421171072 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 53421171072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75151812960).

53421171072 is an abundant number, since it is smaller than the sum of its proper divisors (96882454848).

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

53421171072 is a wasteful number, since it uses less digits than its factorization.

53421171072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1061 (or 1049 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 33.

The spelling of 53421171072 in words is "fifty-three billion, four hundred twenty-one million, one hundred seventy-one thousand, seventy-two".