616206736768 has 64 divisors (see below), whose sum is σ = 1485498420000. Its totient is φ = 248553971712.

The previous prime is 616206736741. The next prime is 616206736771. The reversal of 616206736768 is 867637602616.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20212143 + ... + 20242606.

Almost surely, 2^616206736768 is an apocalyptic number.

616206736768 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

616206736768 is an abundant number, since it is smaller than the sum of its proper divisors (869291683232).

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

616206736768 is a wasteful number, since it uses less digits than its factorization.

616206736768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40454787 (or 40454775 counting only the distinct ones).

The product of its (nonzero) digits is 18289152, while the sum is 58.

The spelling of 616206736768 in words is "six hundred sixteen billion, two hundred six million, seven hundred thirty-six thousand, seven hundred sixty-eight".