53609195520 has 240 divisors, whose sum is σ = 192154942980. Its totient is φ = 14295564288.

The previous prime is 53609195503. The next prime is 53609195537. The reversal of 53609195520 is 2559190635.

53609195520 is a `hidden beast` number, since 5 + 3 + 6 + 0 + 91 + 9 + 552 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (53609195503) and next prime (53609195537).

It can be written as a sum of positive squares in 2 ways, for example, as 53483037696 + 126157824 = 231264^2 + 11232^2 .

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 797124 + ... + 861756.

Almost surely, 2^53609195520 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 53609195520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96077471490).

53609195520 is an abundant number, since it is smaller than the sum of its proper divisors (138545747460).

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

53609195520 is an equidigital number, since it uses as much as digits as its factorization.

53609195520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64672 (or 64643 counting only the distinct ones).

The product of its (nonzero) digits is 364500, while the sum is 45.

The spelling of 53609195520 in words is "fifty-three billion, six hundred nine million, one hundred ninety-five thousand, five hundred twenty".