616868909396 has 24 divisors (see below), whose sum is σ = 1124593606080. Its totient is φ = 295811460800.

The previous prime is 616868909359. The next prime is 616868909407. The reversal of 616868909396 is 693909868616.

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, 31866560 + ... + 31885911.

It is an arithmetic number, because the mean of its divisors is an integer number (46858066920).

Almost surely, 2^616868909396 is an apocalyptic number.

It is an amenable number.

616868909396 is a deficient number, since it is larger than the sum of its proper divisors (507724696684).

616868909396 is a wasteful number, since it uses less digits than its factorization.

616868909396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63752575 (or 63752573 counting only the distinct ones).

The product of its (nonzero) digits is 181398528, while the sum is 71.

The spelling of 616868909396 in words is "six hundred sixteen billion, eight hundred sixty-eight million, nine hundred nine thousand, three hundred ninety-six".