6550640513999 has 2 divisors, whose sum is σ = 6550640514000. Its totient is φ = 6550640513998.

The previous prime is 6550640513993. The next prime is 6550640514007. The reversal of 6550640513999 is 9993150460556.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6550640513999 - 2²⁰ = 6550639465423 is a prime.

It is a super-2 number, since 2×6550640513999² (a number of 26 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6550640513993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3275320256999 + 3275320257000.

It is an arithmetic number, because the mean of its divisors is an integer number (3275320257000).

Almost surely, 2^{6550640513999} is an apocalyptic number.

6550640513999 is a deficient number, since it is larger than the sum of its proper divisors (1).

6550640513999 is an equidigital number, since it uses as much as digits as its factorization.

6550640513999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 39366000, while the sum is 62.

The spelling of 6550640513999 in words is "six trillion, five hundred fifty billion, six hundred forty million, five hundred thirteen thousand, nine hundred ninety-nine".