161016061 has 24 divisors (see below), whose sum is σ = 178246656. Its totient is φ = 145313280.

The previous prime is 161016043. The next prime is 161016109. The reversal of 161016061 is 160610161.

It is not a de Polignac number, because 161016061 - 2⁹ = 161015549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161016761) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1267780 + ... + 1267906.

It is an arithmetic number, because the mean of its divisors is an integer number (7426944).

Almost surely, 2^161016061 is an apocalyptic number.

It is an amenable number.

161016061 is a deficient number, since it is larger than the sum of its proper divisors (17230595).

161016061 is a wasteful number, since it uses less digits than its factorization.

161016061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309 (or 292 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 161016061 is about 12689.2104167281. The cubic root of 161016061 is about 544.0302717529.

It can be divided in two parts, 1610 and 16061, that added together give a palindrome (17671).

The spelling of 161016061 in words is "one hundred sixty-one million, sixteen thousand, sixty-one".