616728371573 has 4 divisors (see below), whose sum is σ = 627181394880. Its totient is φ = 606275348268.

The previous prime is 616728371549. The next prime is 616728371593. The reversal of 616728371573 is 375173827616.

616728371573 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 616728371573 - 2⁸ = 616728371317 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (616728371543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5226511565 + ... + 5226511682.

It is an arithmetic number, because the mean of its divisors is an integer number (156795348720).

Almost surely, 2^616728371573 is an apocalyptic number.

It is an amenable number.

616728371573 is a deficient number, since it is larger than the sum of its proper divisors (10453023307).

616728371573 is a wasteful number, since it uses less digits than its factorization.

616728371573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10453023306.

The product of its digits is 8890560, while the sum is 56.

The spelling of 616728371573 in words is "six hundred sixteen billion, seven hundred twenty-eight million, three hundred seventy-one thousand, five hundred seventy-three".