20344743376240 has 40 divisors (see below), whose sum is σ = 47341580668128. Its totient is φ = 8131006629120.

The previous prime is 20344743376229. The next prime is 20344743376267. The reversal of 20344743376240 is 4267334744302.

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

It is a super-2 number, since 2×20344743376240² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107572452 + ... + 107761411.

Almost surely, 2^{20344743376240} is an apocalyptic number.

20344743376240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20344743376240 is an abundant number, since it is smaller than the sum of its proper divisors (26996837291888).

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

20344743376240 is a wasteful number, since it uses less digits than its factorization.

20344743376240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215335057 (or 215335051 counting only the distinct ones).

The product of its (nonzero) digits is 8128512, while the sum is 49.

The spelling of 20344743376240 in words is "twenty trillion, three hundred forty-four billion, seven hundred forty-three million, three hundred seventy-six thousand, two hundred forty".