6559959840786 has 48 divisors (see below), whose sum is σ = 15515344484640. Its totient is φ = 1986586508160.

The previous prime is 6559959840739. The next prime is 6559959840793. The reversal of 6559959840786 is 6870489599556.

6559959840786 is a `hidden beast` number, since 6 + 559 + 9 + 59 + 8 + 4 + 0 + 7 + 8 + 6 = 666.

It is a super-2 number, since 2×6559959840786² (a number of 26 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10359316 + ... + 10974303.

It is an arithmetic number, because the mean of its divisors is an integer number (323236343430).

Almost surely, 2^{6559959840786} is an apocalyptic number.

6559959840786 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

6559959840786 is an abundant number, since it is smaller than the sum of its proper divisors (8955384643854).

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

6559959840786 is a wasteful number, since it uses less digits than its factorization.

6559959840786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21335191 (or 21335188 counting only the distinct ones).

The product of its (nonzero) digits is 5878656000, while the sum is 81.

The spelling of 6559959840786 in words is "six trillion, five hundred fifty-nine billion, nine hundred fifty-nine million, eight hundred forty thousand, seven hundred eighty-six".