13533420523 has 4 divisors (see below), whose sum is σ = 15466766320. Its totient is φ = 11600074728.

The previous prime is 13533420493. The next prime is 13533420541. The reversal of 13533420523 is 32502433531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32502433531 = 677 ⋅48009503.

It is a cyclic number.

It is not a de Polignac number, because 13533420523 - 2¹³ = 13533412331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13533420583) 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, 966672888 + ... + 966672901.

It is an arithmetic number, because the mean of its divisors is an integer number (3866691580).

Almost surely, 2^13533420523 is an apocalyptic number.

13533420523 is a deficient number, since it is larger than the sum of its proper divisors (1933345797).

13533420523 is an equidigital number, since it uses as much as digits as its factorization.

13533420523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1933345796.

The product of its (nonzero) digits is 32400, while the sum is 31.

The spelling of 13533420523 in words is "thirteen billion, five hundred thirty-three million, four hundred twenty thousand, five hundred twenty-three".