12005231454 has 20 divisors (see below), whose sum is σ = 26900611584. Its totient is φ = 4001743764.

The previous prime is 12005231401. The next prime is 12005231467. The reversal of 12005231454 is 45413250021.

12005231454 is a `hidden beast` number, since 1 + 200 + 5 + 2 + 3 + 1 + 454 = 666.

It is a super-2 number, since 2×12005231454² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 37053022 + ... + 37053345.

Almost surely, 2^12005231454 is an apocalyptic number.

12005231454 is an abundant number, since it is smaller than the sum of its proper divisors (14895380130).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12005231454 is an equidigital number, since it uses as much as digits as its factorization.

12005231454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74106381 (or 74106372 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

Adding to 12005231454 its reverse (45413250021), we get a palindrome (57418481475).

The spelling of 12005231454 in words is "twelve billion, five million, two hundred thirty-one thousand, four hundred fifty-four".