134540220321 has 32 divisors (see below), whose sum is σ = 214682720000. Its totient is φ = 82781771904.

The previous prime is 134540220281. The next prime is 134540220323. The reversal of 134540220321 is 123022045431.

134540220321 is a `hidden beast` number, since 1 + 3 + 454 + 0 + 2 + 203 + 2 + 1 = 666.

It is not a de Polignac number, because 134540220321 - 2⁶ = 134540220257 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (134540220323) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2741205 + ... + 2789853.

It is an arithmetic number, because the mean of its divisors is an integer number (6708835000).

Almost surely, 2^134540220321 is an apocalyptic number.

It is an amenable number.

134540220321 is a deficient number, since it is larger than the sum of its proper divisors (80142499679).

134540220321 is a wasteful number, since it uses less digits than its factorization.

134540220321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56550 (or 56544 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

Adding to 134540220321 its reverse (123022045431), we get a palindrome (257562265752).

The spelling of 134540220321 in words is "one hundred thirty-four billion, five hundred forty million, two hundred twenty thousand, three hundred twenty-one".