616120755909 has 8 divisors (see below), whose sum is σ = 823445635872. Its totient is φ = 409771523280.

The previous prime is 616120755881. The next prime is 616120755967. The reversal of 616120755909 is 909557021616.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 616120755909 - 2¹⁹ = 616120231621 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (616120755979) 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, 243910359 + ... + 243912884.

It is an arithmetic number, because the mean of its divisors is an integer number (102930704484).

Almost surely, 2^616120755909 is an apocalyptic number.

It is an amenable number.

616120755909 is a deficient number, since it is larger than the sum of its proper divisors (207324879963).

616120755909 is a wasteful number, since it uses less digits than its factorization.

616120755909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 487823667.

The product of its (nonzero) digits is 1020600, while the sum is 51.

The spelling of 616120755909 in words is "six hundred sixteen billion, one hundred twenty million, seven hundred fifty-five thousand, nine hundred nine".