20341222440 has 128 divisors (see below), whose sum is σ = 76081489920. Its totient is φ = 4226745600.

The previous prime is 20341222439. The next prime is 20341222469. The reversal of 20341222440 is 4422214302.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 20341222440.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1091476 + ... + 1109955.

It is an arithmetic number, because the mean of its divisors is an integer number (594386640).

Almost surely, 2^20341222440 is an apocalyptic number.

20341222440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20341222440 is an abundant number, since it is smaller than the sum of its proper divisors (55740267480).

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

20341222440 is a wasteful number, since it uses less digits than its factorization.

20341222440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2201463 (or 2201459 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 20341222440 its reverse (4422214302), we get a palindrome (24763436742).

The spelling of 20341222440 in words is "twenty billion, three hundred forty-one million, two hundred twenty-two thousand, four hundred forty".