203408545399 has 8 divisors (see below), whose sum is σ = 209080487952. Its totient is φ = 197804530560.

The previous prime is 203408545397. The next prime is 203408545429. The reversal of 203408545399 is 993545804302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 203408545399 - 2¹ = 203408545397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203408545393) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16975857 + ... + 16987834.

It is an arithmetic number, because the mean of its divisors is an integer number (26135060994).

Almost surely, 2^203408545399 is an apocalyptic number.

203408545399 is a deficient number, since it is larger than the sum of its proper divisors (5671942553).

203408545399 is a wasteful number, since it uses less digits than its factorization.

203408545399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33963857.

The product of its (nonzero) digits is 4665600, while the sum is 52.

The spelling of 203408545399 in words is "two hundred three billion, four hundred eight million, five hundred forty-five thousand, three hundred ninety-nine".