53305452331440 has 80 divisors (see below), whose sum is σ = 165249099818208. Its totient is φ = 14214598248448.

The previous prime is 53305452331409. The next prime is 53305452331441. The reversal of 53305452331440 is 4413325450335.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×53305452331440² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 53305452331392 and 53305452331401.

It is not an unprimeable number, because it can be changed into a prime (53305452331441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17092852 + ... + 19969388.

Almost surely, 2^{53305452331440} is an apocalyptic number.

It is an amenable number.

53305452331440 is an abundant number, since it is smaller than the sum of its proper divisors (111943647486768).

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

53305452331440 is a wasteful number, since it uses less digits than its factorization.

53305452331440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2953766 (or 2953760 counting only the distinct ones).

The product of its (nonzero) digits is 1296000, while the sum is 42.

Adding to 53305452331440 its reverse (4413325450335), we get a palindrome (57718777781775).

The spelling of 53305452331440 in words is "fifty-three trillion, three hundred five billion, four hundred fifty-two million, three hundred thirty-one thousand, four hundred forty".