53444920345 has 8 divisors (see below), whose sum is σ = 64230933960. Its totient is φ = 42691249920.

The previous prime is 53444920307. The next prime is 53444920351. The reversal of 53444920345 is 54302944435.

It can be written as a sum of positive squares in 4 ways, for example, as 813219289 + 52631701056 = 28517^2 + 229416^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 53444920345 - 2¹¹ = 53444918297 is a prime.

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, 8082160 + ... + 8088769.

It is an arithmetic number, because the mean of its divisors is an integer number (8028866745).

Almost surely, 2^53444920345 is an apocalyptic number.

It is an amenable number.

53444920345 is a deficient number, since it is larger than the sum of its proper divisors (10786013615).

53444920345 is a wasteful number, since it uses less digits than its factorization.

53444920345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16171595.

The product of its (nonzero) digits is 1036800, while the sum is 43.

The spelling of 53444920345 in words is "fifty-three billion, four hundred forty-four million, nine hundred twenty thousand, three hundred forty-five".