616551305136452 has 96 divisors (see below), whose sum is σ = 1316355481647360. Its totient is φ = 246653716008960.

The previous prime is 616551305136443. The next prime is 616551305136517. The reversal of 616551305136452 is 254631503155616.

It is a junction number, because it is equal to n+sod(n) for n = 616551305136394 and 616551305136403.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 106489874 + ... + 112130262.

It is an arithmetic number, because the mean of its divisors is an integer number (13712036267160).

Almost surely, 2^{616551305136452} 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 616551305136452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (658177740823680).

616551305136452 is an abundant number, since it is smaller than the sum of its proper divisors (699804176510908).

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

616551305136452 is a wasteful number, since it uses less digits than its factorization.

616551305136452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5642301 (or 5642299 counting only the distinct ones).

The product of its (nonzero) digits is 9720000, while the sum is 53.

The spelling of 616551305136452 in words is "six hundred sixteen trillion, five hundred fifty-one billion, three hundred five million, one hundred thirty-six thousand, four hundred fifty-two".