135422144124521 has 8 divisors (see below), whose sum is σ = 143388484372224. Its totient is φ = 127455840740160.

The previous prime is 135422144124499. The next prime is 135422144124551. The reversal of 135422144124521 is 125421441224531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 135422144124521 - 2¹⁸ = 135422143862377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135422144124551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1466285 + ... + 16522538.

It is an arithmetic number, because the mean of its divisors is an integer number (17923560546528).

Almost surely, 2^{135422144124521} is an apocalyptic number.

It is an amenable number.

135422144124521 is a deficient number, since it is larger than the sum of its proper divisors (7966340247703).

135422144124521 is a wasteful number, since it uses less digits than its factorization.

135422144124521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18431671.

The product of its digits is 307200, while the sum is 41.

The spelling of 135422144124521 in words is "one hundred thirty-five trillion, four hundred twenty-two billion, one hundred forty-four million, one hundred twenty-four thousand, five hundred twenty-one".