1011643302643 has 4 divisors (see below), whose sum is σ = 1012491286488. Its totient is φ = 1010795318800.

The previous prime is 1011643302601. The next prime is 1011643302647. The reversal of 1011643302643 is 3462033461101.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1011643302643 - 2²⁵ = 1011609748211 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1011643302599 and 1011643302608.

It is not an unprimeable number, because it can be changed into a prime (1011643302647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 423990133 + ... + 423992518.

It is an arithmetic number, because the mean of its divisors is an integer number (253122821622).

Almost surely, 2^{1011643302643} is an apocalyptic number.

1011643302643 is a deficient number, since it is larger than the sum of its proper divisors (847983845).

1011643302643 is an equidigital number, since it uses as much as digits as its factorization.

1011643302643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 847983844.

The product of its (nonzero) digits is 31104, while the sum is 34.

Adding to 1011643302643 its reverse (3462033461101), we get a palindrome (4473676763744).

The spelling of 1011643302643 in words is "one trillion, eleven billion, six hundred forty-three million, three hundred two thousand, six hundred forty-three".