616978333645 has 8 divisors (see below), whose sum is σ = 740389568256. Its totient is φ = 493572288336.

The previous prime is 616978333591. The next prime is 616978333661. The reversal of 616978333645 is 546333879616.

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 616978333645 - 2¹¹ = 616978331597 is a prime.

It is a super-3 number, since 3×616978333645³ (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 polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1030777 + ... + 1515406.

It is an arithmetic number, because the mean of its divisors is an integer number (92548696032).

Almost surely, 2^616978333645 is an apocalyptic number.

It is an amenable number.

616978333645 is a deficient number, since it is larger than the sum of its proper divisors (123411234611).

616978333645 is a wasteful number, since it uses less digits than its factorization.

616978333645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2594651.

The product of its digits is 58786560, while the sum is 61.

The spelling of 616978333645 in words is "six hundred sixteen billion, nine hundred seventy-eight million, three hundred thirty-three thousand, six hundred forty-five".