135405204451 has 8 divisors (see below), whose sum is σ = 152479761408. Its totient is φ = 119124813000.

The previous prime is 135405204443. The next prime is 135405204461. The reversal of 135405204451 is 154402504531.

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

It is a cyclic number.

It is not a de Polignac number, because 135405204451 - 2³ = 135405204443 is a prime.

It is a super-2 number, since 2×135405204451² (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 (135405204461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 198541015 + ... + 198541696.

It is an arithmetic number, because the mean of its divisors is an integer number (19059970176).

Almost surely, 2^135405204451 is an apocalyptic number.

135405204451 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

135405204451 is a deficient number, since it is larger than the sum of its proper divisors (17074556957).

135405204451 is a wasteful number, since it uses less digits than its factorization.

135405204451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397082753.

The product of its (nonzero) digits is 48000, while the sum is 34.

Adding to 135405204451 its reverse (154402504531), we get a palindrome (289807708982).

The spelling of 135405204451 in words is "one hundred thirty-five billion, four hundred five million, two hundred four thousand, four hundred fifty-one".