161290324355 has 8 divisors (see below), whose sum is σ = 193559799312. Its totient is φ = 129024652768.

The previous prime is 161290324343. The next prime is 161290324361. The reversal of 161290324355 is 553423092161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 161290324355 - 2⁸ = 161290324099 is a prime.

It is a super-4 number, since 4×161290324355⁴ (a number of 46 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 856697 + ... + 1027866.

It is an arithmetic number, because the mean of its divisors is an integer number (24194974914).

Almost surely, 2^161290324355 is an apocalyptic number.

161290324355 is a deficient number, since it is larger than the sum of its proper divisors (32269474957).

161290324355 is a wasteful number, since it uses less digits than its factorization.

161290324355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1901685.

The product of its (nonzero) digits is 194400, while the sum is 41.

The spelling of 161290324355 in words is "one hundred sixty-one billion, two hundred ninety million, three hundred twenty-four thousand, three hundred fifty-five".