161115050665548 has 192 divisors, whose sum is σ = 479529621043200. Its totient is φ = 45825443262720.

The previous prime is 161115050665529. The next prime is 161115050665549. The reversal of 161115050665548 is 845566050511161.

161115050665548 is a `hidden beast` number, since 1 + 6 + 11 + 15 + 0 + 5 + 0 + 66 + 554 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 161115050665494 and 161115050665503.

It is not an unprimeable number, because it can be changed into a prime (161115050665549) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1314122986 + ... + 1314245582.

It is an arithmetic number, because the mean of its divisors is an integer number (2497550109600).

Almost surely, 2^{161115050665548} is an apocalyptic number.

161115050665548 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 161115050665548, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (239764810521600).

161115050665548 is an abundant number, since it is smaller than the sum of its proper divisors (318414570377652).

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

161115050665548 is a wasteful number, since it uses less digits than its factorization.

161115050665548 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130437 (or 130429 counting only the distinct ones).

The product of its (nonzero) digits is 4320000, while the sum is 54.

The spelling of 161115050665548 in words is "one hundred sixty-one trillion, one hundred fifteen billion, fifty million, six hundred sixty-five thousand, five hundred forty-eight".