161654054864 has 20 divisors (see below), whose sum is σ = 326822329056. Its totient is φ = 77312808672.

The previous prime is 161654054827. The next prime is 161654054873. The reversal of 161654054864 is 468450456161.

161654054864 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×161654054864² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 219638294 + ... + 219639029.

Almost surely, 2^161654054864 is an apocalyptic number.

It is an amenable number.

161654054864 is an abundant number, since it is smaller than the sum of its proper divisors (165168274192).

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

161654054864 is a wasteful number, since it uses less digits than its factorization.

161654054864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439277354 (or 439277348 counting only the distinct ones).

The product of its (nonzero) digits is 2764800, while the sum is 50.

The spelling of 161654054864 in words is "one hundred sixty-one billion, six hundred fifty-four million, fifty-four thousand, eight hundred sixty-four".