12475477457421 has 16 divisors (see below), whose sum is σ = 18731508676608. Its totient is φ = 7316995575600.

The previous prime is 12475477457419. The next prime is 12475477457449.

It is a happy number.

12475477457421 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 12475477457421 - 2¹ = 12475477457419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12475477457461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6097495291 + ... + 6097497336.

It is an arithmetic number, because the mean of its divisors is an integer number (1170719292288).

Almost surely, 2^{12475477457421} is an apocalyptic number.

12475477457421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12475477457421 is a deficient number, since it is larger than the sum of its proper divisors (6256031219187).

12475477457421 is a wasteful number, since it uses less digits than its factorization.

12475477457421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12194992672.

The product of its digits is 61465600, while the sum is 60.

The spelling of 12475477457421 in words is "twelve trillion, four hundred seventy-five billion, four hundred seventy-seven million, four hundred fifty-seven thousand, four hundred twenty-one".