263858873878085 has 32 divisors (see below), whose sum is σ = 330042663417600. Its totient is φ = 202260531110400.

The previous prime is 263858873878081. The next prime is 263858873878163. The reversal of 263858873878085 is 580878378858362.

It is not a de Polignac number, because 263858873878085 - 2² = 263858873878081 is a prime.

It is a super-2 number, since 2×263858873878085² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 263858873877988 and 263858873878006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (263858873878081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6187385 + ... + 23790785.

It is an arithmetic number, because the mean of its divisors is an integer number (10313833231800).

Almost surely, 2^{263858873878085} is an apocalyptic number.

It is an amenable number.

263858873878085 is a deficient number, since it is larger than the sum of its proper divisors (66183789539515).

263858873878085 is a wasteful number, since it uses less digits than its factorization.

263858873878085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17604221.

The product of its (nonzero) digits is 34681651200, while the sum is 86.

The spelling of 263858873878085 in words is "two hundred sixty-three trillion, eight hundred fifty-eight billion, eight hundred seventy-three million, eight hundred seventy-eight thousand, eighty-five".