203245543535555 has 8 divisors (see below), whose sum is σ = 243895305811344. Its totient is φ = 162595999116000.

The previous prime is 203245543535549. The next prime is 203245543535569. The reversal of 203245543535555 is 555535345542302.

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

It is not a de Polignac number, because 203245543535555 - 2²⁶ = 203245476426691 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 203245543535555.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52404521 + ... + 56149130.

It is an arithmetic number, because the mean of its divisors is an integer number (30486913226418).

Almost surely, 2^{203245543535555} is an apocalyptic number.

203245543535555 is a deficient number, since it is larger than the sum of its proper divisors (40649762275789).

203245543535555 is a wasteful number, since it uses less digits than its factorization.

203245543535555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108928117.

The product of its (nonzero) digits is 135000000, while the sum is 56.

The spelling of 203245543535555 in words is "two hundred three trillion, two hundred forty-five billion, five hundred forty-three million, five hundred thirty-five thousand, five hundred fifty-five".