2664044342257 has 24 divisors (see below), whose sum is σ = 2850053266296. Its totient is φ = 2489566230528.

The previous prime is 2664044342251. The next prime is 2664044342269. The reversal of 2664044342257 is 7522434404662.

It can be written as a sum of positive squares in 12 ways, for example, as 239144472576 + 2424899869681 = 489024^2 + 1557209^2 .

It is not a de Polignac number, because 2664044342257 - 2¹⁹ = 2664043817969 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2664044342257.

It is not an unprimeable number, because it can be changed into a prime (2664044342251) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 64999023 + ... + 65039995.

It is an arithmetic number, because the mean of its divisors is an integer number (118752219429).

Almost surely, 2^{2664044342257} is an apocalyptic number.

It is an amenable number.

2664044342257 is a deficient number, since it is larger than the sum of its proper divisors (186008924039).

2664044342257 is a wasteful number, since it uses less digits than its factorization.

2664044342257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42597 (or 42580 counting only the distinct ones).

The product of its (nonzero) digits is 7741440, while the sum is 49.

The spelling of 2664044342257 in words is "two trillion, six hundred sixty-four billion, forty-four million, three hundred forty-two thousand, two hundred fifty-seven".