1285784442348 has 24 divisors (see below), whose sum is σ = 3428758513152. Its totient is φ = 367366983504.

The previous prime is 1285784442347. The next prime is 1285784442359. The reversal of 1285784442348 is 8432444875821.

It is a junction number, because it is equal to n+sod(n) for n = 1285784442291 and 1285784442300.

It is not an unprimeable number, because it can be changed into a prime (1285784442347) 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, 7653478740 + ... + 7653478907.

It is an arithmetic number, because the mean of its divisors is an integer number (142864938048).

Almost surely, 2^{1285784442348} is an apocalyptic number.

It is an amenable number.

1285784442348 is an abundant number, since it is smaller than the sum of its proper divisors (2142974070804).

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

1285784442348 is a wasteful number, since it uses less digits than its factorization.

1285784442348 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15306957661 (or 15306957659 counting only the distinct ones).

The product of its digits is 55050240, while the sum is 60.

The spelling of 1285784442348 in words is "one trillion, two hundred eighty-five billion, seven hundred eighty-four million, four hundred forty-two thousand, three hundred forty-eight".