8001388563 has 16 divisors (see below), whose sum is σ = 12196367616. Its totient is φ = 4570806240.

The previous prime is 8001388561. The next prime is 8001388583. The reversal of 8001388563 is 3658831008.

It is not a de Polignac number, because 8001388563 - 2¹ = 8001388561 is a prime.

It is a super-2 number, since 2×8001388563² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8001388561) 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, 12453 + ... + 127113.

It is an arithmetic number, because the mean of its divisors is an integer number (762272976).

Almost surely, 2^8001388563 is an apocalyptic number.

8001388563 is a deficient number, since it is larger than the sum of its proper divisors (4194979053).

8001388563 is a wasteful number, since it uses less digits than its factorization.

8001388563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117994.

The product of its (nonzero) digits is 138240, while the sum is 42.

The square root of 8001388563 is about 89450.4810663420. The cubic root of 8001388563 is about 2000.1157068892.

The spelling of 8001388563 in words is "eight billion, one million, three hundred eighty-eight thousand, five hundred sixty-three".