2664809239446 has 128 divisors (see below), whose sum is σ = 6161909760000. Its totient is φ = 852626113920.

The previous prime is 2664809239427. The next prime is 2664809239447. The reversal of 2664809239446 is 6449329084662.

2664809239446 is a `hidden beast` number, since 2 + 6 + 6 + 480 + 9 + 23 + 94 + 46 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2664809239447) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 203274340 + ... + 203287448.

It is an arithmetic number, because the mean of its divisors is an integer number (48139920000).

Almost surely, 2^{2664809239446} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2664809239446, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3080954880000).

2664809239446 is an abundant number, since it is smaller than the sum of its proper divisors (3497100520554).

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

2664809239446 is a wasteful number, since it uses less digits than its factorization.

2664809239446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13899 (or 13893 counting only the distinct ones).

The product of its (nonzero) digits is 107495424, while the sum is 63.

The spelling of 2664809239446 in words is "two trillion, six hundred sixty-four billion, eight hundred nine million, two hundred thirty-nine thousand, four hundred forty-six".