2644293253068 has 18 divisors (see below), whose sum is σ = 6684185723124. Its totient is φ = 881431084344.

The previous prime is 2644293253057. The next prime is 2644293253073. The reversal of 2644293253068 is 8603523924462.

2644293253068 is a `hidden beast` number, since 2 + 6 + 4 + 4 + 2 + 9 + 325 + 306 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 36726295146 + ... + 36726295217.

Almost surely, 2^{2644293253068} is an apocalyptic number.

It is an amenable number.

2644293253068 is an abundant number, since it is smaller than the sum of its proper divisors (4039892470056).

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

2644293253068 is a wasteful number, since it uses less digits than its factorization.

2644293253068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73452590373 (or 73452590368 counting only the distinct ones).

The product of its (nonzero) digits is 14929920, while the sum is 54.

The spelling of 2644293253068 in words is "two trillion, six hundred forty-four billion, two hundred ninety-three million, two hundred fifty-three thousand, sixty-eight".