161771010330 has 32 divisors (see below), whose sum is σ = 396511075584. Its totient is φ = 42221086016.

The previous prime is 161771010263. The next prime is 161771010337. The reversal of 161771010330 is 33010177161.

161771010330 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (161771010337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57364197 + ... + 57367016.

It is an arithmetic number, because the mean of its divisors is an integer number (12390971112).

Almost surely, 2^161771010330 is an apocalyptic number.

161771010330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161771010330 is an abundant number, since it is smaller than the sum of its proper divisors (234740065254).

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

161771010330 is a wasteful number, since it uses less digits than its factorization.

161771010330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114731270.

The product of its (nonzero) digits is 2646, while the sum is 30.

Adding to 161771010330 its reverse (33010177161), we get a palindrome (194781187491).

The spelling of 161771010330 in words is "one hundred sixty-one billion, seven hundred seventy-one million, ten thousand, three hundred thirty".