203145512660 has 12 divisors (see below), whose sum is σ = 426605576628. Its totient is φ = 81258205056.

The previous prime is 203145512627. The next prime is 203145512683. The reversal of 203145512660 is 66215541302.

203145512660 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 24955152784 + 178190359876 = 157972^2 + 422126^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 203145512660.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5078637797 + ... + 5078637836.

It is an arithmetic number, because the mean of its divisors is an integer number (35550464719).

Almost surely, 2^203145512660 is an apocalyptic number.

203145512660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203145512660 is an abundant number, since it is smaller than the sum of its proper divisors (223460063968).

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

203145512660 is a wasteful number, since it uses less digits than its factorization.

203145512660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10157275642 (or 10157275640 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 35.

The spelling of 203145512660 in words is "two hundred three billion, one hundred forty-five million, five hundred twelve thousand, six hundred sixty".