161270143006642 has 8 divisors (see below), whose sum is σ = 241916520141036. Its totient is φ = 80631302959632.

The previous prime is 161270143006631. The next prime is 161270143006669. The reversal of 161270143006642 is 246600341072161.

It can be written as a sum of positive squares in 2 ways, for example, as 154993760223201 + 6276382783441 = 12449649^2 + 2505271^2 .

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

It is a super-2 number, since 2×161270143006642² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1884218353 + ... + 1884303940.

Almost surely, 2^{161270143006642} is an apocalyptic number.

161270143006642 is a deficient number, since it is larger than the sum of its proper divisors (80646377134394).

161270143006642 is a wasteful number, since it uses less digits than its factorization.

161270143006642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3768543692.

The product of its (nonzero) digits is 290304, while the sum is 43.

The spelling of 161270143006642 in words is "one hundred sixty-one trillion, two hundred seventy billion, one hundred forty-three million, six thousand, six hundred forty-two".