53320405445 has 4 divisors (see below), whose sum is σ = 63984486540. Its totient is φ = 42656324352.

The previous prime is 53320405441. The next prime is 53320405493. The reversal of 53320405445 is 54450402335.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19354652641 + 33965752804 = 139121^2 + 184298^2 .

It is a cyclic number.

It is not a de Polignac number, because 53320405445 - 2² = 53320405441 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53320405441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5332040540 + ... + 5332040549.

It is an arithmetic number, because the mean of its divisors is an integer number (15996121635).

Almost surely, 2^53320405445 is an apocalyptic number.

It is an amenable number.

53320405445 is a deficient number, since it is larger than the sum of its proper divisors (10664081095).

53320405445 is a wasteful number, since it uses less digits than its factorization.

53320405445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10664081094.

The product of its (nonzero) digits is 144000, while the sum is 35.

The spelling of 53320405445 in words is "fifty-three billion, three hundred twenty million, four hundred five thousand, four hundred forty-five".