135404435451 has 8 divisors (see below), whose sum is σ = 181127324224. Its totient is φ = 89975585160.

The previous prime is 135404435399. The next prime is 135404435521. The reversal of 135404435451 is 154534404531.

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

It is not a de Polignac number, because 135404435451 - 2⁹ = 135404434939 is a prime.

It is a super-2 number, since 2×135404435451² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135404431451) 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, 73508545 + ... + 73510386.

It is an arithmetic number, because the mean of its divisors is an integer number (22640915528).

Almost surely, 2^135404435451 is an apocalyptic number.

135404435451 is a deficient number, since it is larger than the sum of its proper divisors (45722888773).

135404435451 is a wasteful number, since it uses less digits than its factorization.

135404435451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147019241.

The product of its (nonzero) digits is 288000, while the sum is 39.

Adding to 135404435451 its reverse (154534404531), we get a palindrome (289938839982).

The spelling of 135404435451 in words is "one hundred thirty-five billion, four hundred four million, four hundred thirty-five thousand, four hundred fifty-one".