616672778889 has 8 divisors (see below), whose sum is σ = 822738241440. Its totient is φ = 410861251136.

The previous prime is 616672778867. The next prime is 616672778921. The reversal of 616672778889 is 988877276616.

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 616672778889 - 2²⁰ = 616671730313 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 616672778889.

It is not an unprimeable number, because it can be changed into a prime (616672778809) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63478032 + ... + 63487745.

It is an arithmetic number, because the mean of its divisors is an integer number (102842280180).

Almost surely, 2^616672778889 is an apocalyptic number.

It is an amenable number.

616672778889 is a deficient number, since it is larger than the sum of its proper divisors (206065462551).

616672778889 is a wasteful number, since it uses less digits than its factorization.

616672778889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126967399.

The product of its digits is 682795008, while the sum is 75.

The spelling of 616672778889 in words is "six hundred sixteen billion, six hundred seventy-two million, seven hundred seventy-eight thousand, eight hundred eighty-nine".