39786666668793 has 12 divisors (see below), whose sum is σ = 62694141417648. Its totient is φ = 24113131314360.

The previous prime is 39786666668743. The next prime is 39786666668821.

It is a happy number.

39786666668793 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 39786666668793 - 2⁶ = 39786666668729 is a prime.

It is a super-2 number, since 2×39786666668793² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (39786666668743) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 200942760855 + ... + 200942761052.

It is an arithmetic number, because the mean of its divisors is an integer number (5224511784804).

Almost surely, 2^{39786666668793} is an apocalyptic number.

39786666668793 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

It is an amenable number.

39786666668793 is a deficient number, since it is larger than the sum of its proper divisors (22907474748855).

39786666668793 is a wasteful number, since it uses less digits than its factorization.

39786666668793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401885521924 (or 401885521921 counting only the distinct ones).

The product of its digits is 106662334464, while the sum is 90.

The spelling of 39786666668793 in words is "thirty-nine trillion, seven hundred eighty-six billion, six hundred sixty-six million, six hundred sixty-eight thousand, seven hundred ninety-three".