20344334344240 has 40 divisors (see below), whose sum is σ = 47305731065328. Its totient is φ = 8136847077120.

The previous prime is 20344334344223. The next prime is 20344334344261. The reversal of 20344334344240 is 4244343344302.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 20344334344193 and 20344334344202.

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, 13115002 + ... + 14583961.

Almost surely, 2^{20344334344240} is an apocalyptic number.

20344334344240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20344334344240 is an abundant number, since it is smaller than the sum of its proper divisors (26961396721088).

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

20344334344240 is a wasteful number, since it uses less digits than its factorization.

20344334344240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27708157 (or 27708151 counting only the distinct ones).

The product of its (nonzero) digits is 1327104, while the sum is 40.

Adding to 20344334344240 its reverse (4244343344302), we get a palindrome (24588677688542).

The spelling of 20344334344240 in words is "twenty trillion, three hundred forty-four billion, three hundred thirty-four million, three hundred forty-four thousand, two hundred forty".