21341426144 has 12 divisors (see below), whose sum is σ = 42015932784. Its totient is φ = 10670713056.

The previous prime is 21341426129. The next prime is 21341426147. The reversal of 21341426144 is 44162414312.

It is a Harshad number since it is a multiple of its sum of digits (32), and also a Moran number because the ratio is a prime number: 666919567 = 21341426144 / (2 + 1 + 3 + 4 + 1 + 4 + 2 + 6 + 1 + 4 + 4).

It is a self number, because there is not a number n which added to its sum of digits gives 21341426144.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21341426147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333459752 + ... + 333459815.

It is an arithmetic number, because the mean of its divisors is an integer number (3501327732).

Almost surely, 2^21341426144 is an apocalyptic number.

It is an amenable number.

21341426144 is a deficient number, since it is larger than the sum of its proper divisors (20674506640).

21341426144 is an equidigital number, since it uses as much as digits as its factorization.

21341426144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 666919577 (or 666919569 counting only the distinct ones).

The product of its digits is 18432, while the sum is 32.

The spelling of 21341426144 in words is "twenty-one billion, three hundred forty-one million, four hundred twenty-six thousand, one hundred forty-four".