161078016 has 144 divisors (see below), whose sum is σ = 488597760. Its totient is φ = 46632960.

The previous prime is 161077981. The next prime is 161078023. The reversal of 161078016 is 610870161.

It is a happy number.

It is a super-2 number, since 2×161078016² = 51892254476992512, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 193890 + ... + 194718.

It is an arithmetic number, because the mean of its divisors is an integer number (3393040).

Almost surely, 2^161078016 is an apocalyptic number.

161078016 is a gapful number since it is divisible by the number (16) 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 161078016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (244298880).

161078016 is an abundant number, since it is smaller than the sum of its proper divisors (327519744).

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

161078016 is a wasteful number, since it uses less digits than its factorization.

161078016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 882 (or 868 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 30.

The square root of 161078016 is about 12691.6514291876. The cubic root of 161078016 is about 544.1000392722.

The spelling of 161078016 in words is "one hundred sixty-one million, seventy-eight thousand, sixteen".