203521241945040 has 160 divisors (see below), whose sum is σ = 644350907473920. Its totient is φ = 53116667884032.

The previous prime is 203521241945029. The next prime is 203521241945059. The reversal of 203521241945040 is 40549142125302.

It is a junction number, because it is equal to n+sod(n) for n = 203521241944983 and 203521241945001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 839325097 + ... + 839567543.

It is an arithmetic number, because the mean of its divisors is an integer number (4027193171712).

Almost surely, 2^{203521241945040} is an apocalyptic number.

203521241945040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203521241945040 is an abundant number, since it is smaller than the sum of its proper divisors (440829665528880).

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

203521241945040 is a wasteful number, since it uses less digits than its factorization.

203521241945040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316929 (or 316923 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 42.

The spelling of 203521241945040 in words is "two hundred three trillion, five hundred twenty-one billion, two hundred forty-one million, nine hundred forty-five thousand, forty".