203668474542 has 64 divisors (see below), whose sum is σ = 451705282560. Its totient is φ = 60813984384.

The previous prime is 203668474523. The next prime is 203668474567. The reversal of 203668474542 is 245474866302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1013209 + ... + 1197467.

It is an arithmetic number, because the mean of its divisors is an integer number (7057895040).

Almost surely, 2^203668474542 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 203668474542, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (225852641280).

203668474542 is an abundant number, since it is smaller than the sum of its proper divisors (248036808018).

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

203668474542 is a wasteful number, since it uses less digits than its factorization.

203668474542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184697.

The product of its (nonzero) digits is 7741440, while the sum is 51.

The spelling of 203668474542 in words is "two hundred three billion, six hundred sixty-eight million, four hundred seventy-four thousand, five hundred forty-two".