161504112340 has 12 divisors (see below), whose sum is σ = 339158635956. Its totient is φ = 64601644928.

The previous prime is 161504112307. The next prime is 161504112377. The reversal of 161504112340 is 43211405161.

161504112340 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 96628965904 + 64875146436 = 310852^2 + 254706^2 .

It is a junction number, because it is equal to n+sod(n) for n = 161504112299 and 161504112308.

It is a congruent 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 3 ways as a sum of consecutive naturals, for example, 4037602789 + ... + 4037602828.

It is an arithmetic number, because the mean of its divisors is an integer number (28263219663).

Almost surely, 2^161504112340 is an apocalyptic number.

161504112340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161504112340 is an abundant number, since it is smaller than the sum of its proper divisors (177654523616).

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

161504112340 is a wasteful number, since it uses less digits than its factorization.

161504112340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8075205626 (or 8075205624 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

The spelling of 161504112340 in words is "one hundred sixty-one billion, five hundred four million, one hundred twelve thousand, three hundred forty".