161844006870 has 192 divisors, whose sum is σ = 524997293184. Its totient is φ = 33679411200.

The previous prime is 161844006869. The next prime is 161844006887. The reversal of 161844006870 is 78600448161.

161844006870 is a `hidden beast` number, since 1 + 6 + 184 + 400 + 68 + 7 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 462520 + ... + 733220.

It is an arithmetic number, because the mean of its divisors is an integer number (2734360902).

Almost surely, 2^161844006870 is an apocalyptic number.

161844006870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 161844006870, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (262498646592).

161844006870 is an abundant number, since it is smaller than the sum of its proper divisors (363153286314).

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

161844006870 is a wasteful number, since it uses less digits than its factorization.

161844006870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270807 (or 270804 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 45.

The spelling of 161844006870 in words is "one hundred sixty-one billion, eight hundred forty-four million, six thousand, eight hundred seventy".