1020323555503 has 8 divisors (see below), whose sum is σ = 1167525459360. Its totient is φ = 873482000640.

The previous prime is 1020323555483. The next prime is 1020323555533. The reversal of 1020323555503 is 3055553230201.

1020323555503 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 1020323555503 - 2¹³ = 1020323547311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020323555533) 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, 90081178 + ... + 90092503.

It is an arithmetic number, because the mean of its divisors is an integer number (145940682420).

Almost surely, 2^{1020323555503} is an apocalyptic number.

1020323555503 is a deficient number, since it is larger than the sum of its proper divisors (147201903857).

1020323555503 is an equidigital number, since it uses as much as digits as its factorization.

1020323555503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180174497.

The product of its (nonzero) digits is 67500, while the sum is 34.

Adding to 1020323555503 its reverse (3055553230201), we get a palindrome (4075876785704).

The spelling of 1020323555503 in words is "one trillion, twenty billion, three hundred twenty-three million, five hundred fifty-five thousand, five hundred three".