2664323256415 has 32 divisors (see below), whose sum is σ = 3246651112320. Its totient is φ = 2098589036544.

The previous prime is 2664323256401. The next prime is 2664323256421. The reversal of 2664323256415 is 5146523234662.

It is a cyclic number.

It is not a de Polignac number, because 2664323256415 - 2¹¹ = 2664323254367 is a prime.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 720669847 + ... + 720673543.

It is an arithmetic number, because the mean of its divisors is an integer number (101457847260).

Almost surely, 2^{2664323256415} is an apocalyptic number.

2664323256415 is a deficient number, since it is larger than the sum of its proper divisors (582327855905).

2664323256415 is a wasteful number, since it uses less digits than its factorization.

2664323256415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6691.

The product of its digits is 6220800, while the sum is 49.

The spelling of 2664323256415 in words is "two trillion, six hundred sixty-four billion, three hundred twenty-three million, two hundred fifty-six thousand, four hundred fifteen".