6921246648066 has 32 divisors (see below), whose sum is σ = 14256215498880. Its totient is φ = 2238475890816.

The previous prime is 6921246648053. The next prime is 6921246648079. The reversal of 6921246648066 is 6608466421296.

It is an interprime number because it is at equal distance from previous prime (6921246648053) and next prime (6921246648079).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43342011 + ... + 43501406.

It is an arithmetic number, because the mean of its divisors is an integer number (445506734340).

Almost surely, 2^{6921246648066} is an apocalyptic number.

6921246648066 is an abundant number, since it is smaller than the sum of its proper divisors (7334968850814).

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

6921246648066 is a wasteful number, since it uses less digits than its factorization.

6921246648066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86843818.

The product of its (nonzero) digits is 35831808, while the sum is 60.

The spelling of 6921246648066 in words is "six trillion, nine hundred twenty-one billion, two hundred forty-six million, six hundred forty-eight thousand, sixty-six".