1285834581263 has 8 divisors (see below), whose sum is σ = 1353530436720. Its totient is φ = 1218140760960.

The previous prime is 1285834581259. The next prime is 1285834581277. The reversal of 1285834581263 is 3621854385821.

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 1285834581263 - 2² = 1285834581259 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1285834581199 and 1285834581208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1285834580263) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 886193 + ... + 1832213.

It is an arithmetic number, because the mean of its divisors is an integer number (169191304590).

Almost surely, 2^{1285834581263} is an apocalyptic number.

1285834581263 is a deficient number, since it is larger than the sum of its proper divisors (67695855457).

1285834581263 is an equidigital number, since it uses as much as digits as its factorization.

1285834581263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1017577.

The product of its digits is 11059200, while the sum is 56.

The spelling of 1285834581263 in words is "one trillion, two hundred eighty-five billion, eight hundred thirty-four million, five hundred eighty-one thousand, two hundred sixty-three".