2543764655 has 8 divisors (see below), whose sum is σ = 3232077552. Its totient is φ = 1915305088.

The previous prime is 2543764651. The next prime is 2543764693. The reversal of 2543764655 is 5564673452.

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

It is a cyclic number.

It is not a de Polignac number, because 2543764655 - 2² = 2543764651 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 (2543764651) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 14963237 + ... + 14963406.

It is an arithmetic number, because the mean of its divisors is an integer number (404009694).

Almost surely, 2^2543764655 is an apocalyptic number.

2543764655 is a deficient number, since it is larger than the sum of its proper divisors (688312897).

2543764655 is a wasteful number, since it uses less digits than its factorization.

2543764655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29926665.

The product of its digits is 3024000, while the sum is 47.

The square root of 2543764655 is about 50435.7477886469. The cubic root of 2543764655 is about 1365.0827421923.

The spelling of 2543764655 in words is "two billion, five hundred forty-three million, seven hundred sixty-four thousand, six hundred fifty-five".