161067776 has 18 divisors (see below), whose sum is σ = 321506892. Its totient is φ = 80533760.

The previous prime is 161067757. The next prime is 161067871. The reversal of 161067776 is 677760161.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314330 + ... + 314841.

It is an arithmetic number, because the mean of its divisors is an integer number (17861494).

Almost surely, 2^161067776 is an apocalyptic number.

161067776 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

161067776 is a deficient number, since it is larger than the sum of its proper divisors (160439116).

161067776 is an frugal number, since it uses more digits than its factorization.

161067776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 629187 (or 629173 counting only the distinct ones).

The product of its (nonzero) digits is 74088, while the sum is 41.

The square root of 161067776 is about 12691.2480079778. The cubic root of 161067776 is about 544.0885092434.

The spelling of 161067776 in words is "one hundred sixty-one million, sixty-seven thousand, seven hundred seventy-six".