20344423220144 has 10 divisors (see below), whose sum is σ = 39417319989060. Its totient is φ = 10172211610064.

The previous prime is 20344423220137. The next prime is 20344423220153. The reversal of 20344423220144 is 44102232444302.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 635763225614 + ... + 635763225645.

It is an arithmetic number, because the mean of its divisors is an integer number (3941731998906).

Almost surely, 2^{20344423220144} is an apocalyptic number.

It is an amenable number.

20344423220144 is a deficient number, since it is larger than the sum of its proper divisors (19072896768916).

20344423220144 is a wasteful number, since it uses less digits than its factorization.

20344423220144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1271526451267 (or 1271526451261 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 35.

Adding to 20344423220144 its reverse (44102232444302), we get a palindrome (64446655664446).

The spelling of 20344423220144 in words is "twenty trillion, three hundred forty-four billion, four hundred twenty-three million, two hundred twenty thousand, one hundred forty-four".