1285435417268 has 48 divisors (see below), whose sum is σ = 2367261892800. Its totient is φ = 609939083520.

The previous prime is 1285435417249. The next prime is 1285435417271. The reversal of 1285435417268 is 8627145345821.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25818743 + ... + 25868481.

It is an arithmetic number, because the mean of its divisors is an integer number (49317956100).

Almost surely, 2^{1285435417268} is an apocalyptic number.

It is an amenable number.

1285435417268 is a deficient number, since it is larger than the sum of its proper divisors (1081826475532).

1285435417268 is a wasteful number, since it uses less digits than its factorization.

1285435417268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54080 (or 54078 counting only the distinct ones).

The product of its digits is 12902400, while the sum is 56.

The spelling of 1285435417268 in words is "one trillion, two hundred eighty-five billion, four hundred thirty-five million, four hundred seventeen thousand, two hundred sixty-eight".