616517775566 has 32 divisors (see below), whose sum is σ = 1153660430592. Its totient is φ = 240057538560.

The previous prime is 616517775553. The next prime is 616517775593. The reversal of 616517775566 is 665577715616.

It is a happy number.

616517775566 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 616517775499 and 616517775508.

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, 944051 + ... + 1457486.

It is an arithmetic number, because the mean of its divisors is an integer number (36051888456).

Almost surely, 2^616517775566 is an apocalyptic number.

616517775566 is a deficient number, since it is larger than the sum of its proper divisors (537142655026).

616517775566 is a wasteful number, since it uses less digits than its factorization.

616517775566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2403224.

The product of its digits is 55566000, while the sum is 62.

The spelling of 616517775566 in words is "six hundred sixteen billion, five hundred seventeen million, seven hundred seventy-five thousand, five hundred sixty-six".