53856479520 has 144 divisors (see below), whose sum is σ = 184266980352. Its totient is φ = 14324083200.

The previous prime is 53856479461. The next prime is 53856479539. The reversal of 53856479520 is 2597465835.

53856479520 is a `hidden beast` number, since 5 + 3 + 8 + 564 + 79 + 5 + 2 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 502695 + ... + 600345.

It is an arithmetic number, because the mean of its divisors is an integer number (1279631808).

Almost surely, 2^53856479520 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 53856479520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92133490176).

53856479520 is an abundant number, since it is smaller than the sum of its proper divisors (130410500832).

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

53856479520 is a wasteful number, since it uses less digits than its factorization.

53856479520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98055 (or 98044 counting only the distinct ones).

The product of its (nonzero) digits is 9072000, while the sum is 54.

The spelling of 53856479520 in words is "fifty-three billion, eight hundred fifty-six million, four hundred seventy-nine thousand, five hundred twenty".