12044615421 has 16 divisors (see below), whose sum is σ = 16368678144. Its totient is φ = 7876614144.

The previous prime is 12044615419. The next prime is 12044615449. The reversal of 12044615421 is 12451644021.

It is not a de Polignac number, because 12044615421 - 2¹ = 12044615419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12044615221) 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, 150261 + ... + 216026.

It is an arithmetic number, because the mean of its divisors is an integer number (1023042384).

Almost surely, 2^12044615421 is an apocalyptic number.

It is an amenable number.

12044615421 is a deficient number, since it is larger than the sum of its proper divisors (4324062723).

12044615421 is a wasteful number, since it uses less digits than its factorization.

12044615421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366500.

The product of its (nonzero) digits is 7680, while the sum is 30.

The spelling of 12044615421 in words is "twelve billion, forty-four million, six hundred fifteen thousand, four hundred twenty-one".