1563445164253 has 16 divisors (see below), whose sum is σ = 1810669400320. Its totient is φ = 1322291692800.

The previous prime is 1563445164223. The next prime is 1563445164269. The reversal of 1563445164253 is 3524615443651.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1563445164253 - 2²¹ = 1563443067101 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1563445164197 and 1563445164206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1563445164223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4067313 + ... + 4435078.

It is an arithmetic number, because the mean of its divisors is an integer number (113166837520).

Almost surely, 2^{1563445164253} is an apocalyptic number.

It is an amenable number.

1563445164253 is a deficient number, since it is larger than the sum of its proper divisors (247224236067).

1563445164253 is a wasteful number, since it uses less digits than its factorization.

1563445164253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8502748.

The product of its digits is 5184000, while the sum is 49.

The spelling of 1563445164253 in words is "one trillion, five hundred sixty-three billion, four hundred forty-five million, one hundred sixty-four thousand, two hundred fifty-three".