6861488563 has 16 divisors (see below), whose sum is σ = 7294750720. Its totient is φ = 6435658656.

The previous prime is 6861488531. The next prime is 6861488567. The reversal of 6861488563 is 3658841686.

6861488563 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 6861488563 - 2⁵ = 6861488531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6861488567) 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, 1259281 + ... + 1264717.

It is an arithmetic number, because the mean of its divisors is an integer number (455921920).

Almost surely, 2^6861488563 is an apocalyptic number.

6861488563 is a deficient number, since it is larger than the sum of its proper divisors (433262157).

6861488563 is a wasteful number, since it uses less digits than its factorization.

6861488563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6106.

The product of its digits is 6635520, while the sum is 55.

The square root of 6861488563 is about 82834.1026570579. The cubic root of 6861488563 is about 1900.2297564262.

The spelling of 6861488563 in words is "six billion, eight hundred sixty-one million, four hundred eighty-eight thousand, five hundred sixty-three".