203885104905 has 96 divisors (see below), whose sum is σ = 397785997440. Its totient is φ = 95995238400.

The previous prime is 203885104897. The next prime is 203885104919. The reversal of 203885104905 is 509401588302.

It is not a de Polignac number, because 203885104905 - 2³ = 203885104897 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1398594 + ... + 1537476.

It is an arithmetic number, because the mean of its divisors is an integer number (4143604140).

Almost surely, 2^203885104905 is an apocalyptic number.

It is an amenable number.

203885104905 is a deficient number, since it is larger than the sum of its proper divisors (193900892535).

203885104905 is a wasteful number, since it uses less digits than its factorization.

203885104905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139031 (or 139028 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 45.

The spelling of 203885104905 in words is "two hundred three billion, eight hundred eighty-five million, one hundred four thousand, nine hundred five".