203444505412542 has 32 divisors (see below), whose sum is σ = 452100740544000. Its totient is φ = 67814559193464.

The previous prime is 203444505412483. The next prime is 203444505412573. The reversal of 203444505412542 is 245214505444302.

203444505412542 is a `hidden beast` number, since 2 + 0 + 3 + 4 + 4 + 4 + 50 + 54 + 1 + 2 + 542 = 666.

It is a super-2 number, since 2×203444505412542² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5950459 + ... + 21030857.

It is an arithmetic number, because the mean of its divisors is an integer number (14128148142000).

Almost surely, 2^{203444505412542} is an apocalyptic number.

203444505412542 is an abundant number, since it is smaller than the sum of its proper divisors (248656235131458).

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

203444505412542 is a wasteful number, since it uses less digits than its factorization.

203444505412542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15330237 (or 15330231 counting only the distinct ones).

The product of its (nonzero) digits is 3072000, while the sum is 45.

The spelling of 203444505412542 in words is "two hundred three trillion, four hundred forty-four billion, five hundred five million, four hundred twelve thousand, five hundred forty-two".