1560545855221 has 8 divisors (see below), whose sum is σ = 1667785127040. Its totient is φ = 1455022411968.

The previous prime is 1560545855123. The next prime is 1560545855257. The reversal of 1560545855221 is 1225585450651.

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

It is a cyclic number.

It is not a de Polignac number, because 1560545855221 - 2⁷ = 1560545855093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1560545850221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 428955261 + ... + 428958898.

It is an arithmetic number, because the mean of its divisors is an integer number (208473140880).

Almost surely, 2^{1560545855221} is an apocalyptic number.

It is an amenable number.

1560545855221 is a deficient number, since it is larger than the sum of its proper divisors (107239271819).

1560545855221 is a wasteful number, since it uses less digits than its factorization.

1560545855221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 857914283.

The product of its (nonzero) digits is 2400000, while the sum is 49.

The spelling of 1560545855221 in words is "one trillion, five hundred sixty billion, five hundred forty-five million, eight hundred fifty-five thousand, two hundred twenty-one".