1011843418745 has 16 divisors (see below), whose sum is σ = 1223166162960. Its totient is φ = 803506243584.

The previous prime is 1011843418741. The next prime is 1011843418811. The reversal of 1011843418745 is 5478143481101.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 296876778496 + 714966640249 = 544864^2 + 845557^2 .

It is a cyclic number.

It is not a de Polignac number, because 1011843418745 - 2² = 1011843418741 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1011843418745.

It is not an unprimeable number, because it can be changed into a prime (1011843418741) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10658609 + ... + 10753121.

It is an arithmetic number, because the mean of its divisors is an integer number (76447885185).

Almost surely, 2^{1011843418745} is an apocalyptic number.

It is an amenable number.

1011843418745 is a deficient number, since it is larger than the sum of its proper divisors (211322744215).

1011843418745 is a wasteful number, since it uses less digits than its factorization.

1011843418745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110284.

The product of its (nonzero) digits is 430080, while the sum is 47.

Adding to 1011843418745 its reverse (5478143481101), we get a palindrome (6489986899846).

The spelling of 1011843418745 in words is "one trillion, eleven billion, eight hundred forty-three million, four hundred eighteen thousand, seven hundred forty-five".