52736056640 has 112 divisors (see below), whose sum is σ = 126833278464. Its totient is φ = 20884377600.

The previous prime is 52736056573. The next prime is 52736056663. The reversal of 52736056640 is 4665063725.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 52736056591 and 52736056600.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18893645 + ... + 18896435.

Almost surely, 2^52736056640 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 52736056640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63416639232).

52736056640 is an abundant number, since it is smaller than the sum of its proper divisors (74097221824).

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

52736056640 is a wasteful number, since it uses less digits than its factorization.

52736056640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3376 (or 3366 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 44.

The spelling of 52736056640 in words is "fifty-two billion, seven hundred thirty-six million, fifty-six thousand, six hundred forty".