2205404355541 has 4 divisors (see below), whose sum is σ = 2335134023532. Its totient is φ = 2075674687552.

The previous prime is 2205404355527. The next prime is 2205404355547. The reversal of 2205404355541 is 1455534045022.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1242544943025 + 962859412516 = 1114695^2 + 981254^2 .

It is a cyclic number.

It is not a de Polignac number, because 2205404355541 - 2³³ = 2196814420949 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2205404355494 and 2205404355503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2205404355547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64864833970 + ... + 64864834003.

It is an arithmetic number, because the mean of its divisors is an integer number (583783505883).

Almost surely, 2^{2205404355541} is an apocalyptic number.

It is an amenable number.

2205404355541 is a deficient number, since it is larger than the sum of its proper divisors (129729667991).

2205404355541 is a wasteful number, since it uses less digits than its factorization.

2205404355541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129729667990.

The product of its (nonzero) digits is 480000, while the sum is 40.

The spelling of 2205404355541 in words is "two trillion, two hundred five billion, four hundred four million, three hundred fifty-five thousand, five hundred forty-one".