203471145440 has 24 divisors (see below), whose sum is σ = 480700581480. Its totient is φ = 81388458112.

The previous prime is 203471145433. The next prime is 203471145457. The reversal of 203471145440 is 44541174302.

It is a self number, because there is not a number n which added to its sum of digits gives 203471145440.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 635847170 + ... + 635847489.

It is an arithmetic number, because the mean of its divisors is an integer number (20029190895).

Almost surely, 2^203471145440 is an apocalyptic number.

203471145440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203471145440 is an abundant number, since it is smaller than the sum of its proper divisors (277229436040).

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

203471145440 is a wasteful number, since it uses less digits than its factorization.

203471145440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1271694674 (or 1271694666 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 35.

The spelling of 203471145440 in words is "two hundred three billion, four hundred seventy-one million, one hundred forty-five thousand, four hundred forty".