203144912656 has 45 divisors (see below), whose sum is σ = 457881838869. Its totient is φ = 87056696832.

The previous prime is 203144912629. The next prime is 203144912683. The reversal of 203144912656 is 656219441302.

The square root of 203144912656 is 450716.

It is a perfect power (a square), and thus also a powerful number.

It is an interprime number because it is at equal distance from previous prime (203144912629) and next prime (203144912683).

It can be written as a sum of positive squares in only one way, i.e., 117169290000 + 85975622656 = 342300^2 + 293216^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 12612000 + ... + 12628096.

Almost surely, 2^203144912656 is an apocalyptic number.

203144912656 is the 450716-th square number.

It is an amenable number.

203144912656 is an abundant number, since it is smaller than the sum of its proper divisors (254736926213).

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

203144912656 is an frugal number, since it uses more digits than its factorization.

203144912656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32216 (or 16106 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 43.

The spelling of 203144912656 in words is "two hundred three billion, one hundred forty-four million, nine hundred twelve thousand, six hundred fifty-six".