161663037408882 has 96 divisors (see below), whose sum is σ = 370122954439680. Its totient is φ = 50913496771200.

The previous prime is 161663037408869. The next prime is 161663037409033. The reversal of 161663037408882 is 288804730366161.

161663037408882 is a `hidden beast` number, since 1 + 6 + 166 + 30 + 37 + 408 + 8 + 8 + 2 = 666.

It is a super-2 number, since 2×161663037408882² (a number of 29 digits) contains 22 as substring.

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, 139290423 + ... + 140446245.

It is an arithmetic number, because the mean of its divisors is an integer number (3855447442080).

Almost surely, 2^{161663037408882} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 161663037408882, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (185061477219840).

161663037408882 is an abundant number, since it is smaller than the sum of its proper divisors (208459917030798).

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

161663037408882 is a wasteful number, since it uses less digits than its factorization.

161663037408882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1161608 (or 1161605 counting only the distinct ones).

The product of its (nonzero) digits is 55738368, while the sum is 63.

The spelling of 161663037408882 in words is "one hundred sixty-one trillion, six hundred sixty-three billion, thirty-seven million, four hundred eight thousand, eight hundred eighty-two".