52510720640 has 256 divisors, whose sum is σ = 155017152000. Its totient is φ = 16943431680.

The previous prime is 52510720627. The next prime is 52510720663. The reversal of 52510720640 is 4602701525.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 52510720597 and 52510720606.

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, 3724805 + ... + 3738875.

It is an arithmetic number, because the mean of its divisors is an integer number (605535750).

Almost surely, 2^52510720640 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 52510720640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77508576000).

52510720640 is an abundant number, since it is smaller than the sum of its proper divisors (102506431360).

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

52510720640 is a wasteful number, since it uses less digits than its factorization.

52510720640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14128 (or 14102 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 32.

The spelling of 52510720640 in words is "fifty-two billion, five hundred ten million, seven hundred twenty thousand, six hundred forty".