3912731486866 has 16 divisors (see below), whose sum is σ = 6217465849056. Its totient is φ = 1840358707776.

The previous prime is 3912731486863. The next prime is 3912731486879. The reversal of 3912731486866 is 6686841372193.

It is a junction number, because it is equal to n+sod(n) for n = 3912731486798 and 3912731486807.

It is not an unprimeable number, because it can be changed into a prime (3912731486863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28890756 + ... + 29025871.

It is an arithmetic number, because the mean of its divisors is an integer number (388591615566).

Almost surely, 2^{3912731486866} is an apocalyptic number.

3912731486866 is a deficient number, since it is larger than the sum of its proper divisors (2304734362190).

3912731486866 is a wasteful number, since it uses less digits than its factorization.

3912731486866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57918633.

The product of its digits is 62705664, while the sum is 64.

The spelling of 3912731486866 in words is "three trillion, nine hundred twelve billion, seven hundred thirty-one million, four hundred eighty-six thousand, eight hundred sixty-six".