616543388532 has 240 divisors, whose sum is σ = 1772570701440. Its totient is φ = 186000427008.

The previous prime is 616543388521. The next prime is 616543388569. The reversal of 616543388532 is 235883345616.

616543388532 is a `hidden beast` number, since 6 + 1 + 65 + 43 + 3 + 8 + 8 + 532 = 666.

616543388532 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 138329248 + ... + 138333704.

It is an arithmetic number, because the mean of its divisors is an integer number (7385711256).

Almost surely, 2^616543388532 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 616543388532, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (886285350720).

616543388532 is an abundant number, since it is smaller than the sum of its proper divisors (1156027312908).

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

616543388532 is a wasteful number, since it uses less digits than its factorization.

616543388532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5492 (or 5481 counting only the distinct ones).

The product of its digits is 12441600, while the sum is 54.

The spelling of 616543388532 in words is "six hundred sixteen billion, five hundred forty-three million, three hundred eighty-eight thousand, five hundred thirty-two".