161648711326 has 32 divisors (see below), whose sum is σ = 251396812800. Its totient is φ = 77862526560.

The previous prime is 161648711303. The next prime is 161648711327. The reversal of 161648711326 is 623117846161.

It is a super-2 number, since 2×161648711326² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161648711327) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72195715 + ... + 72197953.

It is an arithmetic number, because the mean of its divisors is an integer number (7856150400).

Almost surely, 2^161648711326 is an apocalyptic number.

161648711326 is a deficient number, since it is larger than the sum of its proper divisors (89748101474).

161648711326 is a wasteful number, since it uses less digits than its factorization.

161648711326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4504.

The product of its digits is 290304, while the sum is 46.

The spelling of 161648711326 in words is "one hundred sixty-one billion, six hundred forty-eight million, seven hundred eleven thousand, three hundred twenty-six".