1613161592568 has 144 divisors (see below), whose sum is σ = 4550032131840. Its totient is φ = 516274456320.

The previous prime is 1613161592563. The next prime is 1613161592569. The reversal of 1613161592568 is 8652951613161.

It is a happy number.

1613161592568 is a `hidden beast` number, since 1 + 6 + 13 + 1 + 61 + 5 + 9 + 2 + 568 = 666.

It is a super-3 number, since 3×1613161592568³ (a number of 38 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1613161592561) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 8695596 + ... + 8879172.

It is an arithmetic number, because the mean of its divisors is an integer number (31597445360).

Almost surely, 2^{1613161592568} is an apocalyptic number.

1613161592568 is a gapful number since it is divisible by the number (18) 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 1613161592568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2275016065920).

1613161592568 is an abundant number, since it is smaller than the sum of its proper divisors (2936870539272).

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

1613161592568 is a wasteful number, since it uses less digits than its factorization.

1613161592568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183778 (or 183740 counting only the distinct ones).

The product of its digits is 2332800, while the sum is 54.

The spelling of 1613161592568 in words is "one trillion, six hundred thirteen billion, one hundred sixty-one million, five hundred ninety-two thousand, five hundred sixty-eight".