163890041664 has 56 divisors (see below), whose sum is σ = 433660893408. Its totient is φ = 54625584640.

The previous prime is 163890041639. The next prime is 163890041671. The reversal of 163890041664 is 466140098361.

163890041664 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

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, 3057139 + ... + 3110285.

Almost surely, 2^163890041664 is an apocalyptic number.

It is an amenable number.

163890041664 is an abundant number, since it is smaller than the sum of its proper divisors (269770851744).

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

163890041664 is a wasteful number, since it uses less digits than its factorization.

163890041664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69223 (or 69213 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 48.

The spelling of 163890041664 in words is "one hundred sixty-three billion, eight hundred ninety million, forty-one thousand, six hundred sixty-four".