616644450252 has 36 divisors (see below), whose sum is σ = 1650430736136. Its totient is φ = 193457082240.

The previous prime is 616644450241. The next prime is 616644450271. The reversal of 616644450252 is 252054446616.

616644450252 is a `hidden beast` number, since 616 + 6 + 4 + 4 + 4 + 5 + 0 + 25 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a junction number, because it is equal to n+sod(n) for n = 616644450198 and 616644450207.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 503793874 + ... + 503795097.

It is an arithmetic number, because the mean of its divisors is an integer number (45845298226).

Almost surely, 2^616644450252 is an apocalyptic number.

It is an amenable number.

616644450252 is an abundant number, since it is smaller than the sum of its proper divisors (1033786285884).

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

616644450252 is a wasteful number, since it uses less digits than its factorization.

616644450252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1007588998 (or 1007588993 counting only the distinct ones).

The product of its (nonzero) digits is 1382400, while the sum is 45.

Adding to 616644450252 its reverse (252054446616), we get a palindrome (868698896868).

The spelling of 616644450252 in words is "six hundred sixteen billion, six hundred forty-four million, four hundred fifty thousand, two hundred fifty-two".