797636777766 has 16 divisors (see below), whose sum is σ = 1596022887600. Its totient is φ = 265754037248.

The previous prime is 797636777761. The next prime is 797636777789. The reversal of 797636777766 is 667777636797.

It is a junction number, because it is equal to n+sod(n) for n = 797636777691 and 797636777700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (797636777761) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31208331 + ... + 31233878.

It is an arithmetic number, because the mean of its divisors is an integer number (99751430475).

Almost surely, 2^797636777766 is an apocalyptic number.

797636777766 is an abundant number, since it is smaller than the sum of its proper divisors (798386109834).

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

797636777766 is a wasteful number, since it uses less digits than its factorization.

797636777766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62444343.

The product of its digits is 4116773808, while the sum is 78.

The spelling of 797636777766 in words is "seven hundred ninety-seven billion, six hundred thirty-six million, seven hundred seventy-seven thousand, seven hundred sixty-six".