405230131222155 has 24 divisors (see below), whose sum is σ = 732937976473248. Its totient is φ = 206726095927296.

The previous prime is 405230131222039. The next prime is 405230131222223. The reversal of 405230131222155 is 551222131032504.

405230131222155 is a `hidden beast` number, since 4 + 0 + 5 + 2 + 301 + 312 + 22 + 15 + 5 = 666.

It is not a de Polignac number, because 405230131222155 - 2⁷ = 405230131222027 is a prime.

It is a super-2 number, since 2×405230131222155² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 195763347382 + ... + 195763349451.

It is an arithmetic number, because the mean of its divisors is an integer number (30539082353052).

Almost surely, 2^{405230131222155} is an apocalyptic number.

405230131222155 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

405230131222155 is a deficient number, since it is larger than the sum of its proper divisors (327707845251093).

405230131222155 is a wasteful number, since it uses less digits than its factorization.

405230131222155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391526696867 (or 391526696864 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

Adding to 405230131222155 its reverse (551222131032504), we get a palindrome (956452262254659).

The spelling of 405230131222155 in words is "four hundred five trillion, two hundred thirty billion, one hundred thirty-one million, two hundred twenty-two thousand, one hundred fifty-five".