1685265531264 has 384 divisors, whose sum is σ = 5888598393600. Its totient is φ = 451894505472.

The previous prime is 1685265531233. The next prime is 1685265531311. The reversal of 1685265531264 is 4621355625861.

1685265531264 is a `hidden beast` number, since 1 + 6 + 8 + 5 + 26 + 553 + 1 + 2 + 64 = 666.

It is a tau number, because it is divible by the number of its divisors (384).

It is a super-2 number, since 2×1685265531264² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1685265531264.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 16342714 + ... + 16445510.

It is an arithmetic number, because the mean of its divisors is an integer number (15334891650).

Almost surely, 2^{1685265531264} is an apocalyptic number.

1685265531264 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1685265531264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2944299196800).

1685265531264 is an abundant number, since it is smaller than the sum of its proper divisors (4203332862336).

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

1685265531264 is a wasteful number, since it uses less digits than its factorization.

1685265531264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102950 (or 102935 counting only the distinct ones).

The product of its digits is 10368000, while the sum is 54.

The spelling of 1685265531264 in words is "one trillion, six hundred eighty-five billion, two hundred sixty-five million, five hundred thirty-one thousand, two hundred sixty-four".