1613561109336 has 128 divisors (see below), whose sum is σ = 4891402252800. Its totient is φ = 488775600000.

The previous prime is 1613561109331. The next prime is 1613561109403. The reversal of 1613561109336 is 6339011653161.

1613561109336 is a `hidden beast` number, since 16 + 13 + 5 + 611 + 0 + 9 + 3 + 3 + 6 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 1613561109291 and 1613561109300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1613561109331) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6316086 + ... + 6566586.

It is an arithmetic number, because the mean of its divisors is an integer number (38214080100).

Almost surely, 2^{1613561109336} 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 1613561109336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2445701126400).

1613561109336 is an abundant number, since it is smaller than the sum of its proper divisors (3277841143464).

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

1613561109336 is a wasteful number, since it uses less digits than its factorization.

1613561109336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253238 (or 253228 counting only the distinct ones).

The product of its (nonzero) digits is 262440, while the sum is 45.

The spelling of 1613561109336 in words is "one trillion, six hundred thirteen billion, five hundred sixty-one million, one hundred nine thousand, three hundred thirty-six".