616561356604 has 24 divisors (see below), whose sum is σ = 1141655770640. Its totient is φ = 290542132224.

The previous prime is 616561356577. The next prime is 616561356637. The reversal of 616561356604 is 406653165616.

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, 21002559 + ... + 21031894.

Almost surely, 2^616561356604 is an apocalyptic number.

It is an amenable number.

616561356604 is a deficient number, since it is larger than the sum of its proper divisors (525094414036).

616561356604 is a wasteful number, since it uses less digits than its factorization.

616561356604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42034669 (or 42034667 counting only the distinct ones).

The product of its (nonzero) digits is 2332800, while the sum is 49.

The spelling of 616561356604 in words is "six hundred sixteen billion, five hundred sixty-one million, three hundred fifty-six thousand, six hundred four".