161455305330 has 48 divisors (see below), whose sum is σ = 457945959744. Its totient is φ = 39140679840.

The previous prime is 161455305313. The next prime is 161455305371. The reversal of 161455305330 is 33503554161.

161455305330 is a `hidden beast` number, since 1 + 6 + 1 + 45 + 530 + 53 + 30 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 81542094 + ... + 81544073.

It is an arithmetic number, because the mean of its divisors is an integer number (9540540828).

Almost surely, 2^161455305330 is an apocalyptic number.

161455305330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161455305330 is an abundant number, since it is smaller than the sum of its proper divisors (296490654414).

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

161455305330 is a wasteful number, since it uses less digits than its factorization.

161455305330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163086191 (or 163086188 counting only the distinct ones).

The product of its (nonzero) digits is 81000, while the sum is 36.

Adding to 161455305330 its reverse (33503554161), we get a palindrome (194958859491).

The spelling of 161455305330 in words is "one hundred sixty-one billion, four hundred fifty-five million, three hundred five thousand, three hundred thirty".