616445602656 has 96 divisors (see below), whose sum is σ = 1749936545280. Its totient is φ = 188881857024.

The previous prime is 616445602649. The next prime is 616445602667. The reversal of 616445602656 is 656206544616.

It is a tau number, because it is divible by the number of its divisors (96).

It is a junction number, because it is equal to n+sod(n) for n = 616445602599 and 616445602608.

It is a congruent number.

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, 735090 + ... + 1331633.

It is an arithmetic number, because the mean of its divisors is an integer number (18228505680).

Almost surely, 2^616445602656 is an apocalyptic number.

It is an amenable number.

616445602656 is an abundant number, since it is smaller than the sum of its proper divisors (1133490942624).

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

616445602656 is a wasteful number, since it uses less digits than its factorization.

616445602656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2066988 (or 2066980 counting only the distinct ones).

The product of its (nonzero) digits is 6220800, while the sum is 51.

The spelling of 616445602656 in words is "six hundred sixteen billion, four hundred forty-five million, six hundred two thousand, six hundred fifty-six".