52649139816 has 192 divisors, whose sum is σ = 175853059200. Its totient is φ = 13857329664.

The previous prime is 52649139799. The next prime is 52649139817. The reversal of 52649139816 is 61893194625.

52649139816 is a `hidden beast` number, since 52 + 6 + 491 + 3 + 98 + 16 = 666.

It is not an unprimeable number, because it can be changed into a prime (52649139817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3327075 + ... + 3342861.

It is an arithmetic number, because the mean of its divisors is an integer number (915901350).

Almost surely, 2^52649139816 is an apocalyptic number.

52649139816 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52649139816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87926529600).

52649139816 is an abundant number, since it is smaller than the sum of its proper divisors (123203919384).

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

52649139816 is a wasteful number, since it uses less digits than its factorization.

52649139816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16328 (or 16321 counting only the distinct ones).

The product of its digits is 2799360, while the sum is 54.

The spelling of 52649139816 in words is "fifty-two billion, six hundred forty-nine million, one hundred thirty-nine thousand, eight hundred sixteen".