616775276661 has 4 divisors (see below), whose sum is σ = 822367035552. Its totient is φ = 411183517772.

The previous prime is 616775276653. The next prime is 616775276683. The reversal of 616775276661 is 166672577616.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 616775276661 - 2³ = 616775276653 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 616775276595 and 616775276604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (616775276651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102795879441 + ... + 102795879446.

It is an arithmetic number, because the mean of its divisors is an integer number (205591758888).

Almost surely, 2^616775276661 is an apocalyptic number.

It is an amenable number.

616775276661 is a deficient number, since it is larger than the sum of its proper divisors (205591758891).

616775276661 is a wasteful number, since it uses less digits than its factorization.

616775276661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205591758890.

The product of its digits is 26671680, while the sum is 60.

The spelling of 616775276661 in words is "six hundred sixteen billion, seven hundred seventy-five million, two hundred seventy-six thousand, six hundred sixty-one".