53444306464 has 48 divisors (see below), whose sum is σ = 107700582528. Its totient is φ = 26092184832.

The previous prime is 53444306437. The next prime is 53444306467. The reversal of 53444306464 is 46460344435.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a self number, because there is not a number n which added to its sum of digits gives 53444306464.

It is not an unprimeable number, because it can be changed into a prime (53444306467) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7106034 + ... + 7113550.

It is an arithmetic number, because the mean of its divisors is an integer number (2243762136).

Almost surely, 2^53444306464 is an apocalyptic number.

It is an amenable number.

53444306464 is an abundant number, since it is smaller than the sum of its proper divisors (54256276064).

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

53444306464 is a wasteful number, since it uses less digits than its factorization.

53444306464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12737 (or 12729 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 43.

The spelling of 53444306464 in words is "fifty-three billion, four hundred forty-four million, three hundred six thousand, four hundred sixty-four".