161651636152 has 8 divisors (see below), whose sum is σ = 303096817800. Its totient is φ = 80825818072.

The previous prime is 161651636119. The next prime is 161651636177. The reversal of 161651636152 is 251636156161.

161651636152 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×161651636152² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 161651636099 and 161651636108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10103227252 + ... + 10103227267.

It is an arithmetic number, because the mean of its divisors is an integer number (37887102225).

Almost surely, 2^161651636152 is an apocalyptic number.

It is an amenable number.

161651636152 is a deficient number, since it is larger than the sum of its proper divisors (141445181648).

161651636152 is a wasteful number, since it uses less digits than its factorization.

161651636152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20206454525 (or 20206454521 counting only the distinct ones).

The product of its digits is 194400, while the sum is 43.

The spelling of 161651636152 in words is "one hundred sixty-one billion, six hundred fifty-one million, six hundred thirty-six thousand, one hundred fifty-two".