161652547216666 has 16 divisors (see below), whose sum is σ = 264842207759520. Its totient is φ = 73389581172880.

The previous prime is 161652547216603. The next prime is 161652547216733. The reversal of 161652547216666 is 666612745256161.

It is a super-2 number, since 2×161652547216666² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 161652547216598 and 161652547216607.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4442450401 + ... + 4442486788.

It is an arithmetic number, because the mean of its divisors is an integer number (16552637984970).

Almost surely, 2^{161652547216666} is an apocalyptic number.

161652547216666 is a deficient number, since it is larger than the sum of its proper divisors (103189660542854).

161652547216666 is a wasteful number, since it uses less digits than its factorization.

161652547216666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8884938029.

The product of its digits is 130636800, while the sum is 64.

The spelling of 161652547216666 in words is "one hundred sixty-one trillion, six hundred fifty-two billion, five hundred forty-seven million, two hundred sixteen thousand, six hundred sixty-six".