161506110285 has 48 divisors (see below), whose sum is σ = 314585841024. Its totient is φ = 76053707136.

The previous prime is 161506110277. The next prime is 161506110289. The reversal of 161506110285 is 582011605161.

161506110285 is a `hidden beast` number, since 1 + 6 + 15 + 0 + 611 + 0 + 28 + 5 = 666.

161506110285 is digitally balanced in base 2 and base 11, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 161506110285 - 2³ = 161506110277 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

161506110285 is strictly pandigital in base 11.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161506110289) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 5988259 + ... + 6015168.

It is an arithmetic number, because the mean of its divisors is an integer number (6553871688).

Almost surely, 2^161506110285 is an apocalyptic number.

161506110285 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

161506110285 is a deficient number, since it is larger than the sum of its proper divisors (153079730739).

161506110285 is a wasteful number, since it uses less digits than its factorization.

161506110285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12003474 (or 12003471 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 36.

The spelling of 161506110285 in words is "one hundred sixty-one billion, five hundred six million, one hundred ten thousand, two hundred eighty-five".