13420666033 has 4 divisors (see below), whose sum is σ = 13509544768. Its totient is φ = 13331787300.

The previous prime is 13420666019. The next prime is 13420666073. The reversal of 13420666033 is 33066602431.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 33066602431 = 331 ⋅99899101.

It is a cyclic number.

It is not a de Polignac number, because 13420666033 - 2¹³ = 13420657841 is a prime.

It is a super-2 number, since 2×13420666033² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13420666033.

It is not an unprimeable number, because it can be changed into a prime (13420666003) 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, 44439141 + ... + 44439442.

It is an arithmetic number, because the mean of its divisors is an integer number (3377386192).

Almost surely, 2^13420666033 is an apocalyptic number.

It is an amenable number.

13420666033 is a deficient number, since it is larger than the sum of its proper divisors (88878735).

13420666033 is an equidigital number, since it uses as much as digits as its factorization.

13420666033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88878734.

The product of its (nonzero) digits is 46656, while the sum is 34.

The spelling of 13420666033 in words is "thirteen billion, four hundred twenty million, six hundred sixty-six thousand, thirty-three".