163531066772 has 24 divisors (see below), whose sum is σ = 303092616960. Its totient is φ = 76935689600.

The previous prime is 163531066771. The next prime is 163531066781. The reversal of 163531066772 is 277660135361.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163531066771) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50372 + ... + 574107.

It is an arithmetic number, because the mean of its divisors is an integer number (12628859040).

Almost surely, 2^163531066772 is an apocalyptic number.

It is an amenable number.

163531066772 is a deficient number, since it is larger than the sum of its proper divisors (139561550188).

163531066772 is a wasteful number, since it uses less digits than its factorization.

163531066772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 628351 (or 628349 counting only the distinct ones).

The product of its (nonzero) digits is 952560, while the sum is 47.

The spelling of 163531066772 in words is "one hundred sixty-three billion, five hundred thirty-one million, sixty-six thousand, seven hundred seventy-two".