1047813210644 has 12 divisors (see below), whose sum is σ = 1840292879124. Its totient is φ = 522015245184.

The previous prime is 1047813210641. The next prime is 1047813210659. The reversal of 1047813210644 is 4460123187401.

It can be written as a sum of positive squares in 2 ways, for example, as 654257735044 + 393555475600 = 808862^2 + 627340^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1047813210641) 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 3 ways as a sum of consecutive naturals, for example, 472838789 + ... + 472841004.

It is an arithmetic number, because the mean of its divisors is an integer number (153357739927).

Almost surely, 2^{1047813210644} is an apocalyptic number.

It is an amenable number.

1047813210644 is a deficient number, since it is larger than the sum of its proper divisors (792479668480).

1047813210644 is a wasteful number, since it uses less digits than its factorization.

1047813210644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 945680074 (or 945680072 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 41.

The spelling of 1047813210644 in words is "one trillion, forty-seven billion, eight hundred thirteen million, two hundred ten thousand, six hundred forty-four".