163951180672 has 32 divisors (see below), whose sum is σ = 326705251320. Its totient is φ = 81954568704.

The previous prime is 163951180643. The next prime is 163951180693. The reversal of 163951180672 is 276081159361.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

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, 342958 + ... + 667474.

Almost surely, 2^163951180672 is an apocalyptic number.

It is an amenable number.

163951180672 is a deficient number, since it is larger than the sum of its proper divisors (162754070648).

163951180672 is an equidigital number, since it uses as much as digits as its factorization.

163951180672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328478 (or 328466 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 49.

The spelling of 163951180672 in words is "one hundred sixty-three billion, nine hundred fifty-one million, one hundred eighty thousand, six hundred seventy-two".