53719649872 has 80 divisors (see below), whose sum is σ = 120577600000. Its totient is φ = 22708408320.

The previous prime is 53719649779. The next prime is 53719649881. The reversal of 53719649872 is 27894691735.

It is a self number, because there is not a number n which added to its sum of digits gives 53719649872.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11048722 + ... + 11053582.

It is an arithmetic number, because the mean of its divisors is an integer number (1507220000).

Almost surely, 2^53719649872 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 53719649872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60288800000).

53719649872 is an abundant number, since it is smaller than the sum of its proper divisors (66857950128).

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

53719649872 is a wasteful number, since it uses less digits than its factorization.

53719649872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6204 (or 6198 counting only the distinct ones).

The product of its digits is 22861440, while the sum is 61.

The spelling of 53719649872 in words is "fifty-three billion, seven hundred nineteen million, six hundred forty-nine thousand, eight hundred seventy-two".