1685143015232 has 28 divisors (see below), whose sum is σ = 3425515570596. Its totient is φ = 822020981760.

The previous prime is 1685143015211. The next prime is 1685143015253. The reversal of 1685143015232 is 2325103415861.

It is an interprime number because it is at equal distance from previous prime (1685143015211) and next prime (1685143015253).

It can be written as a sum of positive squares in 2 ways, for example, as 815221186816 + 869921828416 = 902896^2 + 932696^2 .

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a self number, because there is not a number n which added to its sum of digits gives 1685143015232.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 321099323 + ... + 321104570.

It is an arithmetic number, because the mean of its divisors is an integer number (122339841807).

Almost surely, 2^{1685143015232} is an apocalyptic number.

It is an amenable number.

1685143015232 is an abundant number, since it is smaller than the sum of its proper divisors (1740372555364).

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

1685143015232 is an equidigital number, since it uses as much as digits as its factorization.

1685143015232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 642203946 (or 642203936 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 41.

The spelling of 1685143015232 in words is "one trillion, six hundred eighty-five billion, one hundred forty-three million, fifteen thousand, two hundred thirty-two".