161493000067 has 8 divisors (see below), whose sum is σ = 184566720096. Its totient is φ = 138420102912.

The previous prime is 161493000041. The next prime is 161493000073. The reversal of 161493000067 is 760000394161.

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

It is not a de Polignac number, because 161493000067 - 2¹⁹ = 161492475779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161493000017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 296613 + ... + 641065.

It is an arithmetic number, because the mean of its divisors is an integer number (23070840012).

Almost surely, 2^161493000067 is an apocalyptic number.

161493000067 is a deficient number, since it is larger than the sum of its proper divisors (23073720029).

161493000067 is an equidigital number, since it uses as much as digits as its factorization.

161493000067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411437.

The product of its (nonzero) digits is 27216, while the sum is 37.

The spelling of 161493000067 in words is "one hundred sixty-one billion, four hundred ninety-three million, sixty-seven", and thus it is an aban number.