161015516011056 has 80 divisors (see below), whose sum is σ = 477070883509248. Its totient is φ = 45840716275200.

The previous prime is 161015516010967. The next prime is 161015516011061. The reversal of 161015516011056 is 650110615510161.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 852597480 + ... + 852786311.

Almost surely, 2^{161015516011056} is an apocalyptic number.

161015516011056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

161015516011056 is an abundant number, since it is smaller than the sum of its proper divisors (316055367498192).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161015516011056 is a wasteful number, since it uses less digits than its factorization.

161015516011056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1705384090 (or 1705384084 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 39.

The spelling of 161015516011056 in words is "one hundred sixty-one trillion, fifteen billion, five hundred sixteen million, eleven thousand, fifty-six".