616573866536 has 8 divisors (see below), whose sum is σ = 1156075999770. Its totient is φ = 308286933264.

The previous prime is 616573866443. The next prime is 616573866563. The reversal of 616573866536 is 635668375616.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 572603970436 + 43969896100 = 756706^2 + 209690^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38535866651 + ... + 38535866666.

Almost surely, 2^616573866536 is an apocalyptic number.

It is an amenable number.

616573866536 is a deficient number, since it is larger than the sum of its proper divisors (539502133234).

616573866536 is a wasteful number, since it uses less digits than its factorization.

616573866536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77071733323 (or 77071733319 counting only the distinct ones).

The product of its digits is 97977600, while the sum is 62.

The spelling of 616573866536 in words is "six hundred sixteen billion, five hundred seventy-three million, eight hundred sixty-six thousand, five hundred thirty-six".