263047035561 has 32 divisors (see below), whose sum is σ = 391294684800. Its totient is φ = 156206776320.

The previous prime is 263047035553. The next prime is 263047035583. The reversal of 263047035561 is 165530740362.

It is not a de Polignac number, because 263047035561 - 2³ = 263047035553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (263047035521) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 843201 + ... + 1112241.

It is an arithmetic number, because the mean of its divisors is an integer number (12227958900).

Almost surely, 2^263047035561 is an apocalyptic number.

It is an amenable number.

263047035561 is a deficient number, since it is larger than the sum of its proper divisors (128247649239).

263047035561 is a wasteful number, since it uses less digits than its factorization.

263047035561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270089.

The product of its (nonzero) digits is 453600, while the sum is 42.

The spelling of 263047035561 in words is "two hundred sixty-three billion, forty-seven million, thirty-five thousand, five hundred sixty-one".