616544322505 has 8 divisors (see below), whose sum is σ = 739983408192. Its totient is φ = 493148643888.

The previous prime is 616544322473. The next prime is 616544322529. The reversal of 616544322505 is 505223445616.

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 616544322505 - 2⁵ = 616544322473 is a prime.

It is a super-2 number, since 2×616544322505² (a number of 24 digits) contains 22 as substring.

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, 10820509 + ... + 10877338.

It is an arithmetic number, because the mean of its divisors is an integer number (92497926024).

Almost surely, 2^616544322505 is an apocalyptic number.

It is an amenable number.

616544322505 is a deficient number, since it is larger than the sum of its proper divisors (123439085687).

616544322505 is a wasteful number, since it uses less digits than its factorization.

616544322505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21703535.

The product of its (nonzero) digits is 864000, while the sum is 43.

The spelling of 616544322505 in words is "six hundred sixteen billion, five hundred forty-four million, three hundred twenty-two thousand, five hundred five".