1585857428860 has 12 divisors (see below), whose sum is σ = 3330300600648. Its totient is φ = 634342971536.

The previous prime is 1585857428761. The next prime is 1585857428861. The reversal of 1585857428860 is 688247585851.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1585857428861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39646435702 + ... + 39646435741.

It is an arithmetic number, because the mean of its divisors is an integer number (277525050054).

Almost surely, 2^{1585857428860} is an apocalyptic number.

1585857428860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1585857428860 is an abundant number, since it is smaller than the sum of its proper divisors (1744443171788).

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

1585857428860 is a wasteful number, since it uses less digits than its factorization.

1585857428860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79292871452 (or 79292871450 counting only the distinct ones).

The product of its (nonzero) digits is 172032000, while the sum is 67.

The spelling of 1585857428860 in words is "one trillion, five hundred eighty-five billion, eight hundred fifty-seven million, four hundred twenty-eight thousand, eight hundred sixty".