161500435145 has 8 divisors (see below), whose sum is σ = 221486311104. Its totient is φ = 110743155504.

The previous prime is 161500435093. The next prime is 161500435153. The reversal of 161500435145 is 541534005161.

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 161500435145 - 2¹⁶ = 161500369609 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35), and also a Moran number because the ratio is a prime number: 4614298147 = 161500435145 / (1 + 6 + 1 + 5 + 0 + 0 + 4 + 3 + 5 + 1 + 4 + 5).

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, 2307149039 + ... + 2307149108.

It is an arithmetic number, because the mean of its divisors is an integer number (27685788888).

Almost surely, 2^161500435145 is an apocalyptic number.

It is an amenable number.

161500435145 is a deficient number, since it is larger than the sum of its proper divisors (59985875959).

161500435145 is an equidigital number, since it uses as much as digits as its factorization.

161500435145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4614298159.

The product of its (nonzero) digits is 36000, while the sum is 35.

The spelling of 161500435145 in words is "one hundred sixty-one billion, five hundred million, four hundred thirty-five thousand, one hundred forty-five".