2540365704647 has 16 divisors (see below), whose sum is σ = 2582370056448. Its totient is φ = 2498541044160.

The previous prime is 2540365704581. The next prime is 2540365704649. The reversal of 2540365704647 is 7464075630452.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2540365704647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2540365704649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54440708 + ... + 54487350.

It is an arithmetic number, because the mean of its divisors is an integer number (161398128528).

Almost surely, 2^{2540365704647} is an apocalyptic number.

2540365704647 is a deficient number, since it is larger than the sum of its proper divisors (42004351801).

2540365704647 is a wasteful number, since it uses less digits than its factorization.

2540365704647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48550.

The product of its (nonzero) digits is 16934400, while the sum is 53.

The spelling of 2540365704647 in words is "two trillion, five hundred forty billion, three hundred sixty-five million, seven hundred four thousand, six hundred forty-seven".