1313435521636 has 144 divisors (see below), whose sum is σ = 2740118008320. Its totient is φ = 549160335360.

The previous prime is 1313435521627. The next prime is 1313435521679. The reversal of 1313435521636 is 6361255343131.

It is a super-2 number, since 2×1313435521636² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1313435521592 and 1313435521601.

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, 391018125 + ... + 391021483.

It is an arithmetic number, because the mean of its divisors is an integer number (19028597280).

Almost surely, 2^{1313435521636} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1313435521636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1370059004160).

1313435521636 is an abundant number, since it is smaller than the sum of its proper divisors (1426682486684).

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

1313435521636 is a wasteful number, since it uses less digits than its factorization.

1313435521636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3762 (or 3753 counting only the distinct ones).

The product of its digits is 583200, while the sum is 43.

The spelling of 1313435521636 in words is "one trillion, three hundred thirteen billion, four hundred thirty-five million, five hundred twenty-one thousand, six hundred thirty-six".