203687640052 has 48 divisors (see below), whose sum is σ = 406468014400. Its totient is φ = 89061729120.

The previous prime is 203687640049. The next prime is 203687640053. The reversal of 203687640052 is 250046786302.

203687640052 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×203687640052³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 203687639990 and 203687640008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203687640053) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 442974 + ... + 776917.

Almost surely, 2^203687640052 is an apocalyptic number.

It is an amenable number.

203687640052 is a deficient number, since it is larger than the sum of its proper divisors (202780374348).

203687640052 is a wasteful number, since it uses less digits than its factorization.

203687640052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1219953 (or 1219925 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 43.

The spelling of 203687640052 in words is "two hundred three billion, six hundred eighty-seven million, six hundred forty thousand, fifty-two".