6390684919967 has 16 divisors (see below), whose sum is σ = 7123442250240. Its totient is φ = 5697637884288.

The previous prime is 6390684919963. The next prime is 6390684919991. The reversal of 6390684919967 is 7699194860936.

It is not a de Polignac number, because 6390684919967 - 2² = 6390684919963 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6390684919963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2352698 + ... + 4279784.

It is an arithmetic number, because the mean of its divisors is an integer number (445215140640).

Almost surely, 2^{6390684919967} is an apocalyptic number.

6390684919967 is a deficient number, since it is larger than the sum of its proper divisors (732757330273).

6390684919967 is a wasteful number, since it uses less digits than its factorization.

6390684919967 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1937390.

The product of its (nonzero) digits is 952342272, while the sum is 77.

The spelling of 6390684919967 in words is "six trillion, three hundred ninety billion, six hundred eighty-four million, nine hundred nineteen thousand, nine hundred sixty-seven".