161323053000 has 128 divisors (see below), whose sum is σ = 529819056000. Its totient is φ = 40755283200.

The previous prime is 161323052983. The next prime is 161323053041. The reversal of 161323053000 is 350323161.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1358115 + ... + 1472114.

It is an arithmetic number, because the mean of its divisors is an integer number (4139211375).

Almost surely, 2^161323053000 is an apocalyptic number.

161323053000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161323053000 is an abundant number, since it is smaller than the sum of its proper divisors (368496003000).

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

161323053000 is a wasteful number, since it uses less digits than its factorization.

161323053000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2830272 (or 2830258 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 24.

Adding to 161323053000 its reverse (350323161), we get a palindrome (161673376161).

The spelling of 161323053000 in words is "one hundred sixty-one billion, three hundred twenty-three million, fifty-three thousand".