12455405421140 has 96 divisors (see below), whose sum is σ = 30018447849600. Its totient is φ = 4298937950720.

The previous prime is 12455405421097. The next prime is 12455405421143. The reversal of 12455405421140 is 4112450455421.

It is a super-3 number, since 3×12455405421140³ (a number of 40 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12455405421094 and 12455405421103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12455405421143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16168139 + ... + 16920978.

It is an arithmetic number, because the mean of its divisors is an integer number (312692165100).

Almost surely, 2^{12455405421140} is an apocalyptic number.

12455405421140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12455405421140 is an abundant number, since it is smaller than the sum of its proper divisors (17563042428460).

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

12455405421140 is a wasteful number, since it uses less digits than its factorization.

12455405421140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33089225 (or 33089223 counting only the distinct ones).

The product of its (nonzero) digits is 128000, while the sum is 38.

Adding to 12455405421140 its reverse (4112450455421), we get a palindrome (16567855876561).

The spelling of 12455405421140 in words is "twelve trillion, four hundred fifty-five billion, four hundred five million, four hundred twenty-one thousand, one hundred forty".