161924150404 has 27 divisors (see below), whose sum is σ = 285259971493. Its totient is φ = 80424873872.

The previous prime is 161924150389. The next prime is 161924150413. The reversal of 161924150404 is 404051429161.

The square root of 161924150404 is 402398.

It is a perfect power (a square), and thus also a powerful number.

161924150404 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 147294764100 + 14629386304 = 383790^2 + 120952^2 .

It is a Duffinian number.

It is an unprimeable number.

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 8 ways as a sum of consecutive naturals, for example, 139229127 + ... + 139230289.

Almost surely, 2^161924150404 is an apocalyptic number.

161924150404 is the 402398-th square number.

It is an amenable number.

161924150404 is a deficient number, since it is larger than the sum of its proper divisors (123335821089).

161924150404 is an frugal number, since it uses more digits than its factorization.

161924150404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2676 (or 1338 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 37.

Adding to 161924150404 its reverse (404051429161), we get a palindrome (565975579565).

The spelling of 161924150404 in words is "one hundred sixty-one billion, nine hundred twenty-four million, one hundred fifty thousand, four hundred four".