163434230505405 has 48 divisors (see below), whose sum is σ = 287519301036864. Its totient is φ = 85862415260160.

The previous prime is 163434230505361. The next prime is 163434230505457. The reversal of 163434230505405 is 504505032434361.

163434230505405 is a `hidden beast` number, since 1 + 6 + 3 + 4 + 3 + 4 + 230 + 5 + 0 + 5 + 405 = 666.

It is not a de Polignac number, because 163434230505405 - 2¹² = 163434230501309 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 178758642 + ... + 179670588.

It is an arithmetic number, because the mean of its divisors is an integer number (5989985438268).

Almost surely, 2^{163434230505405} is an apocalyptic number.

163434230505405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

163434230505405 is a deficient number, since it is larger than the sum of its proper divisors (124085070531459).

163434230505405 is a wasteful number, since it uses less digits than its factorization.

163434230505405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 971466 (or 971463 counting only the distinct ones).

The product of its (nonzero) digits is 2592000, while the sum is 45.

Adding to 163434230505405 its reverse (504505032434361), we get a palindrome (667939262939766).

The spelling of 163434230505405 in words is "one hundred sixty-three trillion, four hundred thirty-four billion, two hundred thirty million, five hundred five thousand, four hundred five".