135415323451 has 4 divisors (see below), whose sum is σ = 135416294712. Its totient is φ = 135414352192.

The previous prime is 135415323401. The next prime is 135415323481. The reversal of 135415323451 is 154323514531.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 154323514531 = 73 ⋅2114020747.

It is a cyclic number.

It is not a de Polignac number, because 135415323451 - 2²³ = 135406934843 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 135415323451.

It is not an unprimeable number, because it can be changed into a prime (135415323401) 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 3 ways as a sum of consecutive naturals, for example, 232525 + ... + 569998.

It is an arithmetic number, because the mean of its divisors is an integer number (33854073678).

Almost surely, 2^135415323451 is an apocalyptic number.

135415323451 is a deficient number, since it is larger than the sum of its proper divisors (971261).

135415323451 is an equidigital number, since it uses as much as digits as its factorization.

135415323451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 971260.

The product of its digits is 108000, while the sum is 37.

Adding to 135415323451 its reverse (154323514531), we get a palindrome (289738837982).

The spelling of 135415323451 in words is "one hundred thirty-five billion, four hundred fifteen million, three hundred twenty-three thousand, four hundred fifty-one".