1285846063640 has 32 divisors (see below), whose sum is σ = 2898685532880. Its totient is φ = 513354978432.

The previous prime is 1285846063487. The next prime is 1285846063643. The reversal of 1285846063640 is 463606485821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1285846063643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30711539 + ... + 30753378.

Almost surely, 2^{1285846063640} is an apocalyptic number.

1285846063640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1285846063640 is an abundant number, since it is smaller than the sum of its proper divisors (1612839469240).

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

1285846063640 is a wasteful number, since it uses less digits than its factorization.

1285846063640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61465451 (or 61465447 counting only the distinct ones).

The product of its (nonzero) digits is 6635520, while the sum is 53.

The spelling of 1285846063640 in words is "one trillion, two hundred eighty-five billion, eight hundred forty-six million, sixty-three thousand, six hundred forty".