20344120340430 has 32 divisors (see below), whose sum is σ = 48831279235200. Its totient is φ = 5424499822112.

The previous prime is 20344120340389. The next prime is 20344120340441. The reversal of 20344120340430 is 3404302144302.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37157160 + ... + 37700699.

It is an arithmetic number, because the mean of its divisors is an integer number (1525977476100).

Almost surely, 2^{20344120340430} is an apocalyptic number.

20344120340430 is an abundant number, since it is smaller than the sum of its proper divisors (28487158894770).

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

20344120340430 is a wasteful number, since it uses less digits than its factorization.

20344120340430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74866928.

The product of its (nonzero) digits is 27648, while the sum is 30.

Adding to 20344120340430 its reverse (3404302144302), we get a palindrome (23748422484732).

The spelling of 20344120340430 in words is "twenty trillion, three hundred forty-four billion, one hundred twenty million, three hundred forty thousand, four hundred thirty".