203661452540 has 48 divisors (see below), whose sum is σ = 526386528192. Its totient is φ = 64455492096.

The previous prime is 203661452513. The next prime is 203661452551. The reversal of 203661452540 is 45254166302.

203661452540 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 203661452494 and 203661452503.

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, 55949129 + ... + 55952768.

It is an arithmetic number, because the mean of its divisors is an integer number (10966386004).

Almost surely, 2^203661452540 is an apocalyptic number.

203661452540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203661452540 is an abundant number, since it is smaller than the sum of its proper divisors (322725075652).

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

203661452540 is a wasteful number, since it uses less digits than its factorization.

203661452540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111901926 (or 111901924 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 38.

The spelling of 203661452540 in words is "two hundred three billion, six hundred sixty-one million, four hundred fifty-two thousand, five hundred forty".