1563254313253 has 8 divisors (see below), whose sum is σ = 1629790370208. Its totient is φ = 1498090133904.

The previous prime is 1563254313239. The next prime is 1563254313277. The reversal of 1563254313253 is 3523134523651.

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 1563254313253 - 2¹⁷ = 1563254182181 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1563254313653) 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, 342967075 + ... + 342971632.

It is an arithmetic number, because the mean of its divisors is an integer number (203723796276).

Almost surely, 2^{1563254313253} is an apocalyptic number.

It is an amenable number.

1563254313253 is a deficient number, since it is larger than the sum of its proper divisors (66536056955).

1563254313253 is an equidigital number, since it uses as much as digits as its factorization.

1563254313253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 685938803.

The product of its digits is 972000, while the sum is 43.

The spelling of 1563254313253 in words is "one trillion, five hundred sixty-three billion, two hundred fifty-four million, three hundred thirteen thousand, two hundred fifty-three".