161611142230 has 16 divisors (see below), whose sum is σ = 291374618544. Its totient is φ = 64538998560.

The previous prime is 161611142213. The next prime is 161611142239. The reversal of 161611142230 is 32241116161.

It is a super-2 number, since 2×161611142230² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161611142239) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13175856 + ... + 13188115.

It is an arithmetic number, because the mean of its divisors is an integer number (18210913659).

Almost surely, 2^161611142230 is an apocalyptic number.

161611142230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161611142230 is a deficient number, since it is larger than the sum of its proper divisors (129763476314).

161611142230 is a wasteful number, since it uses less digits than its factorization.

161611142230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26364591.

The product of its (nonzero) digits is 1728, while the sum is 28.

Adding to 161611142230 its reverse (32241116161), we get a palindrome (193852258391).

The spelling of 161611142230 in words is "one hundred sixty-one billion, six hundred eleven million, one hundred forty-two thousand, two hundred thirty".