203355322555421 has 8 divisors (see below), whose sum is σ = 209915563563264. Its totient is φ = 196795106040960.

The previous prime is 203355322555387. The next prime is 203355322555499. The reversal of 203355322555421 is 124555223553302.

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 203355322555421 - 2²⁶ = 203355255446557 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 (203355222555421) 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, 11560046 + ... + 23245328.

It is an arithmetic number, because the mean of its divisors is an integer number (26239445445408).

Almost surely, 2^{203355322555421} is an apocalyptic number.

It is an amenable number.

203355322555421 is a deficient number, since it is larger than the sum of its proper divisors (6560241007843).

203355322555421 is a wasteful number, since it uses less digits than its factorization.

203355322555421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12246691.

The product of its (nonzero) digits is 5400000, while the sum is 47.

The spelling of 203355322555421 in words is "two hundred three trillion, three hundred fifty-five billion, three hundred twenty-two million, five hundred fifty-five thousand, four hundred twenty-one".