1356005563 has 16 divisors (see below), whose sum is σ = 1541965824. Its totient is φ = 1181489760.

The previous prime is 1356005557. The next prime is 1356005603. The reversal of 1356005563 is 3655006531.

It is not a de Polignac number, because 1356005563 - 2⁵ = 1356005531 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1356005263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2406 + ... + 52132.

It is an arithmetic number, because the mean of its divisors is an integer number (96372864).

Almost surely, 2^1356005563 is an apocalyptic number.

1356005563 is a deficient number, since it is larger than the sum of its proper divisors (185960261).

1356005563 is a wasteful number, since it uses less digits than its factorization.

1356005563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49842.

The product of its (nonzero) digits is 40500, while the sum is 34.

The square root of 1356005563 is about 36823.9808141380. The cubic root of 1356005563 is about 1106.8458908071.

The spelling of 1356005563 in words is "one billion, three hundred fifty-six million, five thousand, five hundred sixty-three".