1285765345854 has 24 divisors (see below), whose sum is σ = 3039081727032. Its totient is φ = 389625862320.

The previous prime is 1285765345847. The next prime is 1285765345873. The reversal of 1285765345854 is 4585435675821.

1285765345854 is a `hidden beast` number, since 1 + 2 + 8 + 576 + 5 + 3 + 4 + 5 + 8 + 54 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 1285765345791 and 1285765345800.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3246881989 + ... + 3246882384.

It is an arithmetic number, because the mean of its divisors is an integer number (126628405293).

Almost surely, 2^{1285765345854} is an apocalyptic number.

1285765345854 is an abundant number, since it is smaller than the sum of its proper divisors (1753316381178).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1285765345854 is a wasteful number, since it uses less digits than its factorization.

1285765345854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6493764392 (or 6493764389 counting only the distinct ones).

The product of its digits is 161280000, while the sum is 63.

The spelling of 1285765345854 in words is "one trillion, two hundred eighty-five billion, seven hundred sixty-five million, three hundred forty-five thousand, eight hundred fifty-four".