52645199616 has 432 divisors, whose sum is σ = 169385658624. Its totient is φ = 16247734272.

The previous prime is 52645199611. The next prime is 52645199617. The reversal of 52645199616 is 61699154625.

52645199616 is a `hidden beast` number, since 5 + 2 + 6 + 4 + 5 + 19 + 9 + 616 = 666.

It is a tau number, because it is divible by the number of its divisors (432).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52645199611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 70854541 + ... + 70855283.

It is an arithmetic number, because the mean of its divisors is an integer number (392096432).

Almost surely, 2^52645199616 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 52645199616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84692829312).

52645199616 is an abundant number, since it is smaller than the sum of its proper divisors (116740459008).

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

52645199616 is an equidigital number, since it uses as much as digits as its factorization.

52645199616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 858 (or 832 counting only the distinct ones).

The product of its digits is 3499200, while the sum is 54.

The spelling of 52645199616 in words is "fifty-two billion, six hundred forty-five million, one hundred ninety-nine thousand, six hundred sixteen".