616445323552404 has 72 divisors (see below), whose sum is σ = 1570559291857920. Its totient is φ = 203856938272512.

The previous prime is 616445323552379. The next prime is 616445323552411. The reversal of 616445323552404 is 404255323544616.

616445323552404 is a `hidden beast` number, since 6 + 1 + 6 + 4 + 45 + 3 + 2 + 3 + 552 + 40 + 4 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 134322627 + ... + 138836085.

Almost surely, 2^{616445323552404} is an apocalyptic number.

It is an amenable number.

616445323552404 is an abundant number, since it is smaller than the sum of its proper divisors (954113968305516).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

616445323552404 is a wasteful number, since it uses less digits than its factorization.

616445323552404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4543469 (or 4543464 counting only the distinct ones).

The product of its (nonzero) digits is 41472000, while the sum is 54.

The spelling of 616445323552404 in words is "six hundred sixteen trillion, four hundred forty-five billion, three hundred twenty-three million, five hundred fifty-two thousand, four hundred four".