39980798766 has 24 divisors (see below), whose sum is σ = 89419422144. Its totient is φ = 12897031680.

The previous prime is 39980798743. The next prime is 39980798779. The reversal of 39980798766 is 66789708993.

39980798766 is a `hidden beast` number, since 399 + 80 + 7 + 98 + 76 + 6 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 39980798694 and 39980798703.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35824531 + ... + 35825646.

It is an arithmetic number, because the mean of its divisors is an integer number (3725809256).

Almost surely, 2^39980798766 is an apocalyptic number.

39980798766 is an abundant number, since it is smaller than the sum of its proper divisors (49438623378).

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

39980798766 is a wasteful number, since it uses less digits than its factorization.

39980798766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71650216 (or 71650213 counting only the distinct ones).

The product of its (nonzero) digits is 246903552, while the sum is 72.

The spelling of 39980798766 in words is "thirty-nine billion, nine hundred eighty million, seven hundred ninety-eight thousand, seven hundred sixty-six".