405513134023 has 4 divisors (see below), whose sum is σ = 405774251568. Its totient is φ = 405252016480.

The previous prime is 405513134003. The next prime is 405513134041. The reversal of 405513134023 is 320431315504.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 405513134023 - 2⁹ = 405513133511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405513134003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130556443 + ... + 130559548.

It is an arithmetic number, because the mean of its divisors is an integer number (101443562892).

Almost surely, 2^405513134023 is an apocalyptic number.

405513134023 is a deficient number, since it is larger than the sum of its proper divisors (261117545).

405513134023 is a wasteful number, since it uses less digits than its factorization.

405513134023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261117544.

The product of its (nonzero) digits is 21600, while the sum is 31.

Adding to 405513134023 its reverse (320431315504), we get a palindrome (725944449527).

The spelling of 405513134023 in words is "four hundred five billion, five hundred thirteen million, one hundred thirty-four thousand, twenty-three".