6542041655 has 16 divisors (see below), whose sum is σ = 7899629760. Its totient is φ = 5200945152.

The previous prime is 6542041621. The next prime is 6542041699. The reversal of 6542041655 is 5561402456.

It is a cyclic number.

It is not a de Polignac number, because 6542041655 - 2¹² = 6542037559 is a prime.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 558317 + ... + 569913.

It is an arithmetic number, because the mean of its divisors is an integer number (493726860).

Almost surely, 2^6542041655 is an apocalyptic number.

6542041655 is a deficient number, since it is larger than the sum of its proper divisors (1357588105).

6542041655 is a wasteful number, since it uses less digits than its factorization.

6542041655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12298.

The product of its (nonzero) digits is 144000, while the sum is 38.

The square root of 6542041655 is about 80882.8885179059. Note that the first 3 decimals coincide. The cubic root of 6542041655 is about 1870.2705486143.

The spelling of 6542041655 in words is "six billion, five hundred forty-two million, forty-one thousand, six hundred fifty-five".