161674759744 has 21 divisors (see below), whose sum is σ = 320829734641. Its totient is φ = 80835771520.

The previous prime is 161674759703. The next prime is 161674759759. The reversal of 161674759744 is 447957476161.

The square root of 161674759744 is 402088.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 30804462144 + 130870297600 = 175512^2 + 361760^2 .

It is a super-2 number, since 2×161674759744² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

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 in 2 ways as a sum of consecutive naturals, for example, 3191574 + ... + 3241834.

Almost surely, 2^161674759744 is an apocalyptic number.

161674759744 is the 402088-th square number.

It is an amenable number.

161674759744 is a deficient number, since it is larger than the sum of its proper divisors (159154974897).

161674759744 is an frugal number, since it uses more digits than its factorization.

161674759744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100534 (or 50263 counting only the distinct ones).

The product of its digits is 35562240, while the sum is 61.

The spelling of 161674759744 in words is "one hundred sixty-one billion, six hundred seventy-four million, seven hundred fifty-nine thousand, seven hundred forty-four".