53889488640 has 864 divisors, whose sum is σ = 216714004416. Its totient is φ = 12244746240.

The previous prime is 53889488581. The next prime is 53889488659. The reversal of 53889488640 is 4688498835.

53889488640 is a `hidden beast` number, since 5 + 38 + 89 + 488 + 6 + 40 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 155300947 + ... + 155301293.

It is an arithmetic number, because the mean of its divisors is an integer number (250826394).

Almost surely, 2^53889488640 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 53889488640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108357002208).

53889488640 is an abundant number, since it is smaller than the sum of its proper divisors (162824515776).

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

53889488640 is a wasteful number, since it uses less digits than its factorization.

53889488640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465 (or 448 counting only the distinct ones).

The product of its (nonzero) digits is 53084160, while the sum is 63.

The spelling of 53889488640 in words is "fifty-three billion, eight hundred eighty-nine million, four hundred eighty-eight thousand, six hundred forty".