6817542564 has 24 divisors (see below), whose sum is σ = 18180113728. Its totient is φ = 1947869280.

The previous prime is 6817542541. The next prime is 6817542583. The reversal of 6817542564 is 4652457186.

It is a super-2 number, since 2×6817542564² = 92957773223903388192, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40580527 + ... + 40580694.

Almost surely, 2^6817542564 is an apocalyptic number.

It is an amenable number.

6817542564 is an abundant number, since it is smaller than the sum of its proper divisors (11362571164).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6817542564 is a wasteful number, since it uses less digits than its factorization.

6817542564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81161235 (or 81161233 counting only the distinct ones).

The product of its digits is 1612800, while the sum is 48.

The square root of 6817542564 is about 82568.4114174422. The cubic root of 6817542564 is about 1896.1642434139.

The spelling of 6817542564 in words is "six billion, eight hundred seventeen million, five hundred forty-two thousand, five hundred sixty-four".