161461458321 has 8 divisors (see below), whose sum is σ = 217700843040. Its totient is φ = 106431522912.

The previous prime is 161461458307. The next prime is 161461458397. The reversal of 161461458321 is 123854164161.

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

It is not a de Polignac number, because 161461458321 - 2¹⁷ = 161461327249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (161461458721) 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, 302362015 + ... + 302362548.

It is an arithmetic number, because the mean of its divisors is an integer number (27212605380).

Almost surely, 2^161461458321 is an apocalyptic number.

It is an amenable number.

161461458321 is a deficient number, since it is larger than the sum of its proper divisors (56239384719).

161461458321 is an equidigital number, since it uses as much as digits as its factorization.

161461458321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 604724655.

The product of its digits is 138240, while the sum is 42.

The spelling of 161461458321 in words is "one hundred sixty-one billion, four hundred sixty-one million, four hundred fifty-eight thousand, three hundred twenty-one".