161366023 has 16 divisors (see below), whose sum is σ = 210288960. Its totient is φ = 120162816.

The previous prime is 161366021. The next prime is 161366039. The reversal of 161366023 is 320663161.

It is a cyclic number.

It is not a de Polignac number, because 161366023 - 2¹ = 161366021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 161365982 and 161366000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161366021) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 50608 + ... + 53701.

It is an arithmetic number, because the mean of its divisors is an integer number (13143060).

Almost surely, 2^161366023 is an apocalyptic number.

161366023 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

161366023 is a deficient number, since it is larger than the sum of its proper divisors (48922937).

161366023 is a wasteful number, since it uses less digits than its factorization.

161366023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104346.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 161366023 is about 12702.9926788926. The cubic root of 161366023 is about 544.4241292603.

The spelling of 161366023 in words is "one hundred sixty-one million, three hundred sixty-six thousand, twenty-three".