2660064406404 has 24 divisors (see below), whose sum is σ = 6206936547840. Its totient is φ = 886671049824.

The previous prime is 2660064406313. The next prime is 2660064406507. The reversal of 2660064406404 is 4046044600662.

It is a super-2 number, since 2×2660064406404² (a number of 26 digits) contains 22 as substring.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1478919 + ... + 2739950.

It is an arithmetic number, because the mean of its divisors is an integer number (258622356160).

Almost surely, 2^{2660064406404} is an apocalyptic number.

It is an amenable number.

2660064406404 is an abundant number, since it is smaller than the sum of its proper divisors (3546872141436).

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

2660064406404 is a wasteful number, since it uses less digits than its factorization.

2660064406404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4271419 (or 4271417 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 42.

The spelling of 2660064406404 in words is "two trillion, six hundred sixty billion, sixty-four million, four hundred six thousand, four hundred four".