203643242161240 has 64 divisors (see below), whose sum is σ = 523687627920960. Its totient is φ = 69816063283200.

The previous prime is 203643242161103. The next prime is 203643242161397. The reversal of 203643242161240 is 42161242346302.

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 = 203643242161193 and 203643242161202.

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, 18941037 + ... + 27677596.

It is an arithmetic number, because the mean of its divisors is an integer number (8182619186265).

Almost surely, 2^{203643242161240} is an apocalyptic number.

203643242161240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203643242161240 is an abundant number, since it is smaller than the sum of its proper divisors (320044385759720).

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

203643242161240 is a wasteful number, since it uses less digits than its factorization.

203643242161240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46634252 (or 46634248 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 40.

The spelling of 203643242161240 in words is "two hundred three trillion, six hundred forty-three billion, two hundred forty-two million, one hundred sixty-one thousand, two hundred forty".