616613561015 has 4 divisors (see below), whose sum is σ = 739936273224. Its totient is φ = 493290848808.

The previous prime is 616613560999. The next prime is 616613561021. The reversal of 616613561015 is 510165316616.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 616613561015 - 2⁴ = 616613560999 is a prime.

It is a super-3 number, since 3×616613561015³ (a number of 36 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61661356097 + ... + 61661356106.

It is an arithmetic number, because the mean of its divisors is an integer number (184984068306).

Almost surely, 2^616613561015 is an apocalyptic number.

616613561015 is a deficient number, since it is larger than the sum of its proper divisors (123322712209).

616613561015 is a wasteful number, since it uses less digits than its factorization.

616613561015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123322712208.

The product of its (nonzero) digits is 97200, while the sum is 41.

The spelling of 616613561015 in words is "six hundred sixteen billion, six hundred thirteen million, five hundred sixty-one thousand, fifteen".