3209426692864 has 108 divisors (see below), whose sum is σ = 7461481066200. Its totient is φ = 1373764030464.

The previous prime is 3209426692817. The next prime is 3209426692867. The reversal of 3209426692864 is 4682966249023.

It is not an unprimeable number, because it can be changed into a prime (3209426692867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9989967 + ... + 10306225.

It is an arithmetic number, because the mean of its divisors is an integer number (69087787650).

Almost surely, 2^{3209426692864} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3209426692864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3730740533100).

3209426692864 is an abundant number, since it is smaller than the sum of its proper divisors (4252054373336).

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

3209426692864 is an equidigital number, since it uses as much as digits as its factorization.

3209426692864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317098 (or 317077 counting only the distinct ones).

The product of its (nonzero) digits is 53747712, while the sum is 61.

The spelling of 3209426692864 in words is "three trillion, two hundred nine billion, four hundred twenty-six million, six hundred ninety-two thousand, eight hundred sixty-four".