53516531560 has 128 divisors (see below), whose sum is σ = 130230892800. Its totient is φ = 19731712000.

The previous prime is 53516531533. The next prime is 53516531609. The reversal of 53516531560 is 6513561535.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16459935 + ... + 16463185.

It is an arithmetic number, because the mean of its divisors is an integer number (1017428850).

Almost surely, 2^53516531560 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 53516531560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65115446400).

53516531560 is an abundant number, since it is smaller than the sum of its proper divisors (76714361240).

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

53516531560 is a wasteful number, since it uses less digits than its factorization.

53516531560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3931 (or 3927 counting only the distinct ones).

The product of its (nonzero) digits is 202500, while the sum is 40.

The spelling of 53516531560 in words is "fifty-three billion, five hundred sixteen million, five hundred thirty-one thousand, five hundred sixty".