1047389615866 has 16 divisors (see below), whose sum is σ = 1730550189888. Its totient is φ = 471463992000.

The previous prime is 1047389615863. The next prime is 1047389615887. The reversal of 1047389615866 is 6685169837401.

It is a junction number, because it is equal to n+sod(n) for n = 1047389615798 and 1047389615807.

It is not an unprimeable number, because it can be changed into a prime (1047389615863) 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, 231107535 + ... + 231112066.

It is an arithmetic number, because the mean of its divisors is an integer number (108159386868).

Almost surely, 2^{1047389615866} is an apocalyptic number.

1047389615866 is a deficient number, since it is larger than the sum of its proper divisors (683160574022).

1047389615866 is a wasteful number, since it uses less digits than its factorization.

1047389615866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462219717.

The product of its (nonzero) digits is 52254720, while the sum is 64.

The spelling of 1047389615866 in words is "one trillion, forty-seven billion, three hundred eighty-nine million, six hundred fifteen thousand, eight hundred sixty-six".