1355023520423 has 4 divisors (see below), whose sum is σ = 1355074759080. Its totient is φ = 1354972281768.

The previous prime is 1355023520413. The next prime is 1355023520551. The reversal of 1355023520423 is 3240253205531.

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 1355023520423 - 2³² = 1350728553127 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 (1355023520413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25579640 + ... + 25632557.

It is an arithmetic number, because the mean of its divisors is an integer number (338768689770).

Almost surely, 2^{1355023520423} is an apocalyptic number.

1355023520423 is a deficient number, since it is larger than the sum of its proper divisors (51238657).

1355023520423 is an equidigital number, since it uses as much as digits as its factorization.

1355023520423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51238656.

The product of its (nonzero) digits is 108000, while the sum is 35.

Adding to 1355023520423 its reverse (3240253205531), we get a palindrome (4595276725954).

The spelling of 1355023520423 in words is "one trillion, three hundred fifty-five billion, twenty-three million, five hundred twenty thousand, four hundred twenty-three".