161546601858 has 8 divisors (see below), whose sum is σ = 323093203728. Its totient is φ = 53848867284.

The previous prime is 161546601847. The next prime is 161546601871. The reversal of 161546601858 is 858106645161.

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

161546601858 is an admirable number.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 161546601858.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13462216816 + ... + 13462216827.

It is an arithmetic number, because the mean of its divisors is an integer number (40386650466).

Almost surely, 2^161546601858 is an apocalyptic number.

161546601858 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

161546601858 is a wasteful number, since it uses less digits than its factorization.

161546601858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26924433648.

The product of its (nonzero) digits is 1382400, while the sum is 51.

The spelling of 161546601858 in words is "one hundred sixty-one billion, five hundred forty-six million, six hundred one thousand, eight hundred fifty-eight".