1205541545545 has 8 divisors (see below), whose sum is σ = 1446663617280. Its totient is φ = 964424061360.

The previous prime is 1205541545519. The next prime is 1205541545569. The reversal of 1205541545545 is 5455451455021.

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

It is not a de Polignac number, because 1205541545545 - 2¹³ = 1205541537353 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1205541545495 and 1205541545504.

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, 539515 + ... + 1643824.

It is an arithmetic number, because the mean of its divisors is an integer number (180832952160).

Almost surely, 2^{1205541545545} is an apocalyptic number.

It is an amenable number.

1205541545545 is a deficient number, since it is larger than the sum of its proper divisors (241122071735).

1205541545545 is a wasteful number, since it uses less digits than its factorization.

1205541545545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2293775.

The product of its (nonzero) digits is 2000000, while the sum is 46.

The spelling of 1205541545545 in words is "one trillion, two hundred five billion, five hundred forty-one million, five hundred forty-five thousand, five hundred forty-five".