161063500128825 has 48 divisors (see below), whose sum is σ = 304376720893056. Its totient is φ = 73618528012800.

The previous prime is 161063500128691. The next prime is 161063500128851. The reversal of 161063500128825 is 528821005360161.

It is not a de Polignac number, because 161063500128825 - 2¹² = 161063500124729 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 18190956 + ... + 25554605.

It is an arithmetic number, because the mean of its divisors is an integer number (6341181685272).

Almost surely, 2^{161063500128825} is an apocalyptic number.

161063500128825 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

161063500128825 is a deficient number, since it is larger than the sum of its proper divisors (143313220764231).

161063500128825 is a wasteful number, since it uses less digits than its factorization.

161063500128825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43752594 (or 43752589 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 48.

Adding to 161063500128825 its reverse (528821005360161), we get a palindrome (689884505488986).

The spelling of 161063500128825 in words is "one hundred sixty-one trillion, sixty-three billion, five hundred million, one hundred twenty-eight thousand, eight hundred twenty-five".