1284615428785 has 16 divisors (see below), whose sum is σ = 1666244321280. Its totient is φ = 945138559680.

The previous prime is 1284615428777. The next prime is 1284615428801. The reversal of 1284615428785 is 5878245164821.

It is not a de Polignac number, because 1284615428785 - 2³ = 1284615428777 is a prime.

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, 36446065 + ... + 36481294.

It is an arithmetic number, because the mean of its divisors is an integer number (104140270080).

Almost surely, 2^{1284615428785} is an apocalyptic number.

It is an amenable number.

1284615428785 is a deficient number, since it is larger than the sum of its proper divisors (381628892495).

1284615428785 is a wasteful number, since it uses less digits than its factorization.

1284615428785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72927648.

The product of its digits is 34406400, while the sum is 61.

The spelling of 1284615428785 in words is "one trillion, two hundred eighty-four billion, six hundred fifteen million, four hundred twenty-eight thousand, seven hundred eighty-five".