263363023561 has 8 divisors (see below), whose sum is σ = 290941891200. Its totient is φ = 236390285040.

The previous prime is 263363023507. The next prime is 263363023601. The reversal of 263363023561 is 165320363362.

263363023561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 263363023561 - 2¹³ = 263363015369 is a prime.

It is a super-2 number, since 2×263363023561² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (263363026561) 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, 151531366 + ... + 151533103.

It is an arithmetic number, because the mean of its divisors is an integer number (36367736400).

Almost surely, 2^263363023561 is an apocalyptic number.

It is an amenable number.

263363023561 is a deficient number, since it is larger than the sum of its proper divisors (27578867639).

263363023561 is a wasteful number, since it uses less digits than its factorization.

263363023561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303064559.

The product of its (nonzero) digits is 349920, while the sum is 40.

The spelling of 263363023561 in words is "two hundred sixty-three billion, three hundred sixty-three million, twenty-three thousand, five hundred sixty-one".