53432541440 has 72 divisors (see below), whose sum is σ = 128138588928. Its totient is φ = 21347809280.

The previous prime is 53432541431. The next prime is 53432541451. The reversal of 53432541440 is 4414523435.

It is a self number, because there is not a number n which added to its sum of digits gives 53432541440.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1080455 + ... + 1128825.

It is an arithmetic number, because the mean of its divisors is an integer number (1779702624).

Almost surely, 2^53432541440 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 53432541440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64069294464).

53432541440 is an abundant number, since it is smaller than the sum of its proper divisors (74706047488).

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

53432541440 is an equidigital number, since it uses as much as digits as its factorization.

53432541440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49255 (or 49241 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 35.

The spelling of 53432541440 in words is "fifty-three billion, four hundred thirty-two million, five hundred forty-one thousand, four hundred forty".