52640499744 has 144 divisors (see below), whose sum is σ = 171148723200. Its totient is φ = 15034245120.

The previous prime is 52640499641. The next prime is 52640499749. The reversal of 52640499744 is 44799404625.

52640499744 is a `hidden beast` number, since 52 + 64 + 0 + 499 + 7 + 44 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is not an unprimeable number, because it can be changed into a prime (52640499749) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9672064 + ... + 9677504.

It is an arithmetic number, because the mean of its divisors is an integer number (1188532800).

Almost surely, 2^52640499744 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 52640499744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85574361600).

52640499744 is an abundant number, since it is smaller than the sum of its proper divisors (118508223456).

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

52640499744 is a wasteful number, since it uses less digits than its factorization.

52640499744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10263 (or 10252 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 54.

The spelling of 52640499744 in words is "fifty-two billion, six hundred forty million, four hundred ninety-nine thousand, seven hundred forty-four".