53504440536 has 128 divisors (see below), whose sum is σ = 137978043840. Its totient is φ = 17283072000.

The previous prime is 53504440523. The next prime is 53504440537. The reversal of 53504440536 is 63504440535.

It is a junction number, because it is equal to n+sod(n) for n = 53504440494 and 53504440503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53504440537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34451536 + ... + 34453088.

Almost surely, 2^53504440536 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 53504440536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68989021920).

53504440536 is an abundant number, since it is smaller than the sum of its proper divisors (84473603304).

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

53504440536 is a wasteful number, since it uses less digits than its factorization.

53504440536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1957 (or 1953 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 39.

Subtracting 53504440536 from its reverse (63504440535), we obtain a palindrome (9999999999).

The spelling of 53504440536 in words is "fifty-three billion, five hundred four million, four hundred forty thousand, five hundred thirty-six".