20344140222560 has 384 divisors, whose sum is σ = 65251644595200. Its totient is φ = 5800142315520.

The previous prime is 20344140222509. The next prime is 20344140222599. The reversal of 20344140222560 is 6522204144302.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 20344140222560.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5289854 + ... + 8286786.

It is an arithmetic number, because the mean of its divisors is an integer number (169926157800).

Almost surely, 2^{20344140222560} is an apocalyptic number.

20344140222560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20344140222560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32625822297600).

20344140222560 is an abundant number, since it is smaller than the sum of its proper divisors (44907504372640).

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

20344140222560 is a wasteful number, since it uses less digits than its factorization.

20344140222560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2997014 (or 2997006 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 35.

Adding to 20344140222560 its reverse (6522204144302), we get a palindrome (26866344366862).

The spelling of 20344140222560 in words is "twenty trillion, three hundred forty-four billion, one hundred forty million, two hundred twenty-two thousand, five hundred sixty".