203154366442420 has 48 divisors (see below), whose sum is σ = 427769717492880. Its totient is φ = 81043723321344.

The previous prime is 203154366442411. The next prime is 203154366442453. The reversal of 203154366442420 is 24244663451302.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 2303510423824 + 200850856018596 = 1517732^2 + 14172186^2 .

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, 12925476 + ... + 23945284.

It is an arithmetic number, because the mean of its divisors is an integer number (8911869114435).

Almost surely, 2^{203154366442420} is an apocalyptic number.

203154366442420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203154366442420 is an abundant number, since it is smaller than the sum of its proper divisors (224615351050460).

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

203154366442420 is a wasteful number, since it uses less digits than its factorization.

203154366442420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11022292 (or 11022290 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 46.

The spelling of 203154366442420 in words is "two hundred three trillion, one hundred fifty-four billion, three hundred sixty-six million, four hundred forty-two thousand, four hundred twenty".