263663142655 has 8 divisors (see below), whose sum is σ = 345159023184. Its totient is φ = 191755012800.

The previous prime is 263663142649. The next prime is 263663142667. The reversal of 263663142655 is 556241366362.

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

It is not a de Polignac number, because 263663142655 - 2³ = 263663142647 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 263663142599 and 263663142608.

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 7 ways as a sum of consecutive naturals, for example, 2396937606 + ... + 2396937715.

It is an arithmetic number, because the mean of its divisors is an integer number (43144877898).

Almost surely, 2^263663142655 is an apocalyptic number.

263663142655 is a deficient number, since it is larger than the sum of its proper divisors (81495880529).

263663142655 is a wasteful number, since it uses less digits than its factorization.

263663142655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4793875337.

The product of its digits is 4665600, while the sum is 49.

The spelling of 263663142655 in words is "two hundred sixty-three billion, six hundred sixty-three million, one hundred forty-two thousand, six hundred fifty-five".