203946645642 has 16 divisors (see below), whose sum is σ = 407899527840. Its totient is φ = 67981175792.

The previous prime is 203946645631. The next prime is 203946645659. The reversal of 203946645642 is 246546649302.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 238909 + ... + 681887.

It is an arithmetic number, because the mean of its divisors is an integer number (25493720490).

Almost surely, 2^203946645642 is an apocalyptic number.

203946645642 is an abundant number, since it is smaller than the sum of its proper divisors (203952882198).

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

203946645642 is a wasteful number, since it uses less digits than its factorization.

203946645642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 519717.

The product of its (nonzero) digits is 7464960, while the sum is 51.

The spelling of 203946645642 in words is "two hundred three billion, nine hundred forty-six million, six hundred forty-five thousand, six hundred forty-two".