161064651601 has 8 divisors (see below), whose sum is σ = 184242307904. Its totient is φ = 137929100400.

The previous prime is 161064651577. The next prime is 161064651653. The reversal of 161064651601 is 106156460161.

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

It is not a de Polignac number, because 161064651601 - 2⁵ = 161064651569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161064651401) 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, 10518075 + ... + 10533376.

It is an arithmetic number, because the mean of its divisors is an integer number (23030288488).

Almost surely, 2^161064651601 is an apocalyptic number.

It is an amenable number.

161064651601 is a deficient number, since it is larger than the sum of its proper divisors (23177656303).

161064651601 is a wasteful number, since it uses less digits than its factorization.

161064651601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21052551.

The product of its (nonzero) digits is 25920, while the sum is 37.

The spelling of 161064651601 in words is "one hundred sixty-one billion, sixty-four million, six hundred fifty-one thousand, six hundred one".