20344342454140 has 12 divisors (see below), whose sum is σ = 42723119153736. Its totient is φ = 8137736981648.

The previous prime is 20344342454099. The next prime is 20344342454173. The reversal of 20344342454140 is 4145424344302.

It is a super-3 number, since 3×20344342454140³ (a number of 41 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20344342454093 and 20344342454102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 508608561334 + ... + 508608561373.

It is an arithmetic number, because the mean of its divisors is an integer number (3560259929478).

Almost surely, 2^{20344342454140} is an apocalyptic number.

20344342454140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20344342454140 is an abundant number, since it is smaller than the sum of its proper divisors (22378776699596).

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

20344342454140 is a wasteful number, since it uses less digits than its factorization.

20344342454140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1017217122716 (or 1017217122714 counting only the distinct ones).

The product of its (nonzero) digits is 737280, while the sum is 40.

Adding to 20344342454140 its reverse (4145424344302), we get a palindrome (24489766798442).

The spelling of 20344342454140 in words is "twenty trillion, three hundred forty-four billion, three hundred forty-two million, four hundred fifty-four thousand, one hundred forty".