4991685626766 has 16 divisors (see below), whose sum is σ = 9983427894144. Its totient is φ = 1663885768824.

The previous prime is 4991685626737. The next prime is 4991685626771. The reversal of 4991685626766 is 6676265861994.

It is a Curzon number.

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, 1168036 + ... + 3368631.

It is an arithmetic number, because the mean of its divisors is an integer number (623964243384).

Almost surely, 2^{4991685626766} is an apocalyptic number.

4991685626766 is an abundant number, since it is smaller than the sum of its proper divisors (4991742267378).

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

4991685626766 is a wasteful number, since it uses less digits than its factorization.

4991685626766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4720055.

The product of its digits is 1410877440, while the sum is 75.

The spelling of 4991685626766 in words is "four trillion, nine hundred ninety-one billion, six hundred eighty-five million, six hundred twenty-six thousand, seven hundred sixty-six".