616560352644 has 48 divisors (see below), whose sum is σ = 1535103442880. Its totient is φ = 192036096000.

The previous prime is 616560352637. The next prime is 616560352721. The reversal of 616560352644 is 446253065616.

It is a junction number, because it is equal to n+sod(n) for n = 616560352593 and 616560352602.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18505357 + ... + 18538644.

Almost surely, 2^616560352644 is an apocalyptic number.

It is an amenable number.

616560352644 is an abundant number, since it is smaller than the sum of its proper divisors (918543090236).

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

616560352644 is a wasteful number, since it uses less digits than its factorization.

616560352644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37044100 (or 37044098 counting only the distinct ones).

The product of its (nonzero) digits is 3110400, while the sum is 48.

The spelling of 616560352644 in words is "six hundred sixteen billion, five hundred sixty million, three hundred fifty-two thousand, six hundred forty-four".