263242142655 has 16 divisors (see below), whose sum is σ = 424402602624. Its totient is φ = 139324084640.

The previous prime is 263242142641. The next prime is 263242142663. The reversal of 263242142655 is 556241242362.

It is not a de Polignac number, because 263242142655 - 2⁶ = 263242142591 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 (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66980769 + ... + 66984698.

It is an arithmetic number, because the mean of its divisors is an integer number (26525162664).

Almost surely, 2^263242142655 is an apocalyptic number.

263242142655 is a deficient number, since it is larger than the sum of its proper divisors (161160459969).

263242142655 is a wasteful number, since it uses less digits than its factorization.

263242142655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133965606.

The product of its digits is 691200, while the sum is 42.

The spelling of 263242142655 in words is "two hundred sixty-three billion, two hundred forty-two million, one hundred forty-two thousand, six hundred fifty-five".