135421545421323 has 48 divisors (see below), whose sum is σ = 235342442200320. Its totient is φ = 73303601237568.

The previous prime is 135421545421319. The next prime is 135421545421363. The reversal of 135421545421323 is 323124545124531.

135421545421323 is a `hidden beast` number, since 1 + 3 + 5 + 4 + 21 + 54 + 542 + 1 + 32 + 3 = 666.

It is not a de Polignac number, because 135421545421323 - 2² = 135421545421319 is a prime.

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 47 ways as a sum of consecutive naturals, for example, 6378436 + ... + 17650142.

It is an arithmetic number, because the mean of its divisors is an integer number (4902967545840).

Almost surely, 2^{135421545421323} is an apocalyptic number.

135421545421323 is a deficient number, since it is larger than the sum of its proper divisors (99920896778997).

135421545421323 is a wasteful number, since it uses less digits than its factorization.

135421545421323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11281776 (or 11281773 counting only the distinct ones).

The product of its digits is 1728000, while the sum is 45.

The spelling of 135421545421323 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 twenty-three".