20402344340120 has 32 divisors (see below), whose sum is σ = 48605585047200. Its totient is φ = 7680882574848.

The previous prime is 20402344340089. The next prime is 20402344340141. The reversal of 20402344340120 is 2104344320402.

It is a super-2 number, since 2×20402344340120² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15001723100 + ... + 15001724459.

It is an arithmetic number, because the mean of its divisors is an integer number (1518924532725).

Almost surely, 2^{20402344340120} is an apocalyptic number.

20402344340120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20402344340120 is an abundant number, since it is smaller than the sum of its proper divisors (28203240707080).

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

20402344340120 is a wasteful number, since it uses less digits than its factorization.

20402344340120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30003447587 (or 30003447583 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 29.

Adding to 20402344340120 its reverse (2104344320402), we get a palindrome (22506688660522).

The spelling of 20402344340120 in words is "twenty trillion, four hundred two billion, three hundred forty-four million, three hundred forty thousand, one hundred twenty".