6450939616899 has 16 divisors (see below), whose sum is σ = 8638084353024. Its totient is φ = 4282220820000.

The previous prime is 6450939616871. The next prime is 6450939616903. The reversal of 6450939616899 is 9986169390546.

6450939616899 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Cunningham number, because it is equal to 2539870²-1.

It is not a de Polignac number, because 6450939616899 - 2⁵ = 6450939616867 is a prime.

It is a super-2 number, since 2×6450939616899² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6450939616899.

It is not an unprimeable number, because it can be changed into a prime (6450939616859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1269934 + ... + 3809804.

It is an arithmetic number, because the mean of its divisors is an integer number (539880272064).

Almost surely, 2^{6450939616899} is an apocalyptic number.

6450939616899 is a deficient number, since it is larger than the sum of its proper divisors (2187144736125).

6450939616899 is a wasteful number, since it uses less digits than its factorization.

6450939616899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2543498.

The product of its (nonzero) digits is 680244480, while the sum is 75.

The spelling of 6450939616899 in words is "six trillion, four hundred fifty billion, nine hundred thirty-nine million, six hundred sixteen thousand, eight hundred ninety-nine".