133421440013 has 4 divisors (see below), whose sum is σ = 133461354048. Its totient is φ = 133381525980.

The previous prime is 133421439959. The next prime is 133421440037. The reversal of 133421440013 is 310044124331.

It is a happy number.

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: 310044124331 = 19231 ⋅16122101.

It is a cyclic number.

It is not a de Polignac number, because 133421440013 - 2⁸ = 133421439757 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 (133421440073) 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, 19952003 + ... + 19958688.

It is an arithmetic number, because the mean of its divisors is an integer number (33365338512).

Almost surely, 2^133421440013 is an apocalyptic number.

It is an amenable number.

133421440013 is a deficient number, since it is larger than the sum of its proper divisors (39914035).

133421440013 is an equidigital number, since it uses as much as digits as its factorization.

133421440013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39914034.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 133421440013 its reverse (310044124331), we get a palindrome (443465564344).

The spelling of 133421440013 in words is "one hundred thirty-three billion, four hundred twenty-one million, four hundred forty thousand, thirteen".