1020143303661 has 8 divisors (see below), whose sum is σ = 1360975955040. Its totient is φ = 679703094032.

The previous prime is 1020143303639. The next prime is 1020143303677. The reversal of 1020143303661 is 1663033410201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1020143303661 - 2¹⁰ = 1020143302637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020143303681) 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, 98104371 + ... + 98114768.

It is an arithmetic number, because the mean of its divisors is an integer number (170121994380).

Almost surely, 2^{1020143303661} is an apocalyptic number.

It is an amenable number.

1020143303661 is a deficient number, since it is larger than the sum of its proper divisors (340832651379).

1020143303661 is a wasteful number, since it uses less digits than its factorization.

1020143303661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196220875.

The product of its (nonzero) digits is 7776, while the sum is 30.

Adding to 1020143303661 its reverse (1663033410201), we get a palindrome (2683176713862).

The spelling of 1020143303661 in words is "one trillion, twenty billion, one hundred forty-three million, three hundred three thousand, six hundred sixty-one".