52499763640 has 64 divisors (see below), whose sum is σ = 122204013120. Its totient is φ = 20284800000.

The previous prime is 52499763623. The next prime is 52499763649. The reversal of 52499763640 is 4636799425.

52499763640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52499763649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7165 + ... + 324115.

It is an arithmetic number, because the mean of its divisors is an integer number (1909437705).

Almost surely, 2^52499763640 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 52499763640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61102006560).

52499763640 is an abundant number, since it is smaller than the sum of its proper divisors (69704249480).

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

52499763640 is a wasteful number, since it uses less digits than its factorization.

52499763640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317104 (or 317100 counting only the distinct ones).

The product of its (nonzero) digits is 9797760, while the sum is 55.

The spelling of 52499763640 in words is "fifty-two billion, four hundred ninety-nine million, seven hundred sixty-three thousand, six hundred forty".