616321130545 has 8 divisors (see below), whose sum is σ = 739589624424. Its totient is φ = 493054059264.

The previous prime is 616321130531. The next prime is 616321130597. The reversal of 616321130545 is 545031123616.

616321130545 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 4427970849 + 611893159696 = 66543^2 + 782236^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 616321130545 - 2¹¹ = 616321128497 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1288287 + ... + 1700683.

It is an arithmetic number, because the mean of its divisors is an integer number (92448703053).

Almost surely, 2^616321130545 is an apocalyptic number.

It is an amenable number.

616321130545 is a deficient number, since it is larger than the sum of its proper divisors (123268493879).

616321130545 is a wasteful number, since it uses less digits than its factorization.

616321130545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 711299.

The product of its (nonzero) digits is 64800, while the sum is 37.

The spelling of 616321130545 in words is "six hundred sixteen billion, three hundred twenty-one million, one hundred thirty thousand, five hundred forty-five".