161950230000 has 600 divisors, whose sum is σ = 616649521488. Its totient is φ = 39426048000.

The previous prime is 161950229993. The next prime is 161950230007. The reversal of 161950230000 is 32059161.

It is an interprime number because it is at equal distance from previous prime (161950229993) and next prime (161950230007).

It is a tau number, because it is divible by the number of its divisors (600).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161950230007) by changing a digit.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 113489287 + ... + 113490713.

Almost surely, 2^161950230000 is an apocalyptic number.

161950230000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 161950230000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (308324760744).

161950230000 is an abundant number, since it is smaller than the sum of its proper divisors (454699291488).

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

161950230000 is a wasteful number, since it uses less digits than its factorization.

161950230000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1571 (or 1547 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

Adding to 161950230000 its reverse (32059161), we get a palindrome (161982289161).

The spelling of 161950230000 in words is "one hundred sixty-one billion, nine hundred fifty million, two hundred thirty thousand".