161613346104 has 192 divisors, whose sum is σ = 519538406400. Its totient is φ = 44426426112.

The previous prime is 161613346093. The next prime is 161613346109. The reversal of 161613346104 is 401643316161.

161613346104 is a `hidden beast` number, since 1 + 6 + 1 + 6 + 1 + 3 + 34 + 610 + 4 = 666.

It is a super-2 number, since 2×161613346104² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161613346109) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1339774 + ... + 1455410.

It is an arithmetic number, because the mean of its divisors is an integer number (2705929200).

Almost surely, 2^161613346104 is an apocalyptic number.

161613346104 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 161613346104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (259769203200).

161613346104 is an abundant number, since it is smaller than the sum of its proper divisors (357925060296).

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

161613346104 is a wasteful number, since it uses less digits than its factorization.

161613346104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115762 (or 115755 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The spelling of 161613346104 in words is "one hundred sixty-one billion, six hundred thirteen million, three hundred forty-six thousand, one hundred four".