161013776 has 40 divisors (see below), whose sum is σ = 388945344. Its totient is φ = 62732160.

The previous prime is 161013767. The next prime is 161013791. The reversal of 161013776 is 677310161.

161013776 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64115 + ... + 66578.

Almost surely, 2^161013776 is an apocalyptic number.

161013776 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

161013776 is an abundant number, since it is smaller than the sum of its proper divisors (227931568).

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

161013776 is a wasteful number, since it uses less digits than its factorization.

161013776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130719 (or 130713 counting only the distinct ones).

The product of its (nonzero) digits is 5292, while the sum is 32.

The square root of 161013776 is about 12689.1203792856. The cubic root of 161013776 is about 544.0276982725.

The spelling of 161013776 in words is "one hundred sixty-one million, thirteen thousand, seven hundred seventy-six".