161670104272 has 10 divisors (see below), whose sum is σ = 313235827058. Its totient is φ = 80835052128.

The previous prime is 161670104263. The next prime is 161670104273. The reversal of 161670104272 is 272401076161.

It can be written as a sum of positive squares in only one way, i.e., 133695534736 + 27974569536 = 365644^2 + 167256^2 .

It is a super-2 number, since 2×161670104272² (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 (161670104273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5052190743 + ... + 5052190774.

Almost surely, 2^161670104272 is an apocalyptic number.

It is an amenable number.

161670104272 is a deficient number, since it is larger than the sum of its proper divisors (151565722786).

161670104272 is a wasteful number, since it uses less digits than its factorization.

161670104272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10104381525 (or 10104381519 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 37.

The spelling of 161670104272 in words is "one hundred sixty-one billion, six hundred seventy million, one hundred four thousand, two hundred seventy-two".