39763779966 has 12 divisors (see below), whose sum is σ = 86154856632. Its totient is φ = 13254593316.

The previous prime is 39763779961. The next prime is 39763780039. The reversal of 39763779966 is 66997736793.

It is a super-2 number, since 2×39763779966² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 39763779894 and 39763779903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39763779961) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1104549426 + ... + 1104549461.

It is an arithmetic number, because the mean of its divisors is an integer number (7179571386).

Almost surely, 2^39763779966 is an apocalyptic number.

39763779966 is an abundant number, since it is smaller than the sum of its proper divisors (46391076666).

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

39763779966 is a wasteful number, since it uses less digits than its factorization.

39763779966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2209098895 (or 2209098892 counting only the distinct ones).

The product of its digits is 486091368, while the sum is 72.

The spelling of 39763779966 in words is "thirty-nine billion, seven hundred sixty-three million, seven hundred seventy-nine thousand, nine hundred sixty-six".