203305404542045 has 64 divisors (see below), whose sum is σ = 282578846054400. Its totient is φ = 139270991569920.

The previous prime is 203305404542029. The next prime is 203305404542059. The reversal of 203305404542045 is 540245404503302.

It is not a de Polignac number, because 203305404542045 - 2⁴ = 203305404542029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 203305404541993 and 203305404542011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4392542 + ... + 20637471.

It is an arithmetic number, because the mean of its divisors is an integer number (4415294469600).

Almost surely, 2^{203305404542045} is an apocalyptic number.

It is an amenable number.

203305404542045 is a deficient number, since it is larger than the sum of its proper divisors (79273441512355).

203305404542045 is a wasteful number, since it uses less digits than its factorization.

203305404542045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25030230.

The product of its (nonzero) digits is 1152000, while the sum is 41.

The spelling of 203305404542045 in words is "two hundred three trillion, three hundred five billion, four hundred four million, five hundred forty-two thousand, forty-five".