135421545421333 has 16 divisors (see below), whose sum is σ = 137025449302896. Its totient is φ = 133825132385280.

The previous prime is 135421545421319. The next prime is 135421545421363. The reversal of 135421545421333 is 333124545124531.

It can be written as a sum of positive squares in 8 ways, for example, as 47295976120849 + 88125569300484 = 6877207^2 + 9387522^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135421545421333 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 (135421545421363) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79700391 + ... + 81381787.

It is an arithmetic number, because the mean of its divisors is an integer number (8564090581431).

Almost surely, 2^{135421545421333} is an apocalyptic number.

It is an amenable number.

135421545421333 is a deficient number, since it is larger than the sum of its proper divisors (1603903881563).

135421545421333 is a wasteful number, since it uses less digits than its factorization.

135421545421333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1683624.

The product of its digits is 2592000, while the sum is 46.

The spelling of 135421545421333 in words is "one hundred thirty-five trillion, four hundred twenty-one billion, five hundred forty-five million, four hundred twenty-one thousand, three hundred thirty-three".