2538667207649 has 8 divisors (see below), whose sum is σ = 2539984006560. Its totient is φ = 2537350697376.

The previous prime is 2538667207591. The next prime is 2538667207667. The reversal of 2538667207649 is 9467027668352.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2538667207649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2538667200649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18781862 + ... + 18916544.

It is an arithmetic number, because the mean of its divisors is an integer number (317498000820).

Almost surely, 2^{2538667207649} is an apocalyptic number.

It is an amenable number.

2538667207649 is a deficient number, since it is larger than the sum of its proper divisors (1316798911).

2538667207649 is a wasteful number, since it uses less digits than its factorization.

2538667207649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144319.

The product of its (nonzero) digits is 182891520, while the sum is 65.

The spelling of 2538667207649 in words is "two trillion, five hundred thirty-eight billion, six hundred sixty-seven million, two hundred seven thousand, six hundred forty-nine".