161210175632105 has 8 divisors (see below), whose sum is σ = 193452285998472. Its totient is φ = 128968090345728.

The previous prime is 161210175632047. The next prime is 161210175632137. The reversal of 161210175632105 is 501236571012161.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 45810845993641 + 115399329638464 = 6768371^2 + 10742408^2 .

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 161210175632105 - 2¹⁴ = 161210175615721 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13589939 + ... + 22519031.

It is an arithmetic number, because the mean of its divisors is an integer number (24181535749809).

Almost surely, 2^{161210175632105} is an apocalyptic number.

It is an amenable number.

161210175632105 is a deficient number, since it is larger than the sum of its proper divisors (32242110366367).

161210175632105 is an equidigital number, since it uses as much as digits as its factorization.

161210175632105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12539995.

The product of its (nonzero) digits is 75600, while the sum is 41.

The spelling of 161210175632105 in words is "one hundred sixty-one trillion, two hundred ten billion, one hundred seventy-five million, six hundred thirty-two thousand, one hundred five".