161077816 has 16 divisors (see below), whose sum is σ = 302425200. Its totient is φ = 80431104.

The previous prime is 161077811. The next prime is 161077823. The reversal of 161077816 is 618770161.

161077816 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161077811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6940 + ... + 19243.

It is an arithmetic number, because the mean of its divisors is an integer number (18901575).

Almost surely, 2^161077816 is an apocalyptic number.

It is an amenable number.

161077816 is a deficient number, since it is larger than the sum of its proper divisors (141347384).

161077816 is a wasteful number, since it uses less digits than its factorization.

161077816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26958 (or 26954 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 37.

The square root of 161077816 is about 12691.6435499899. The cubic root of 161077816 is about 544.0998140810.

The spelling of 161077816 in words is "one hundred sixty-one million, seventy-seven thousand, eight hundred sixteen".