161116510 has 16 divisors (see below), whose sum is σ = 290472336. Its totient is φ = 64343808.

The previous prime is 161116481. The next prime is 161116573. The reversal of 161116510 is 15611161.

It is a congruent number.

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, 6099 + ... + 18958.

It is an arithmetic number, because the mean of its divisors is an integer number (18154521).

Almost surely, 2^161116510 is an apocalyptic number.

161116510 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161116510 is a deficient number, since it is larger than the sum of its proper divisors (129355826).

161116510 is a wasteful number, since it uses less digits than its factorization.

161116510 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25707.

The product of its (nonzero) digits is 180, while the sum is 22.

The square root of 161116510 is about 12693.1678473106. The cubic root of 161116510 is about 544.1433783515.

Adding to 161116510 its reverse (15611161), we get a palindrome (176727671).

The spelling of 161116510 in words is "one hundred sixty-one million, one hundred sixteen thousand, five hundred ten".