168573472929 has 9 divisors (see below), whose sum is σ = 243496795633. Its totient is φ = 112381494132.

The previous prime is 168573472927. The next prime is 168573472979. The reversal of 168573472929 is 929274375861.

The square root of 168573472929 is 410577.

It is a perfect power (a square), and thus also a powerful number.

168573472929 is a `hidden beast` number, since 1 + 6 + 8 + 5 + 73 + 472 + 92 + 9 = 666.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 168573472929 - 2¹ = 168573472927 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (168573472927) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1163302 + ... + 1300160.

Almost surely, 2^168573472929 is an apocalyptic number.

168573472929 is the 410577-th square number.

168573472929 is the 205289-th centered octagonal number.

It is an amenable number.

168573472929 is a deficient number, since it is larger than the sum of its proper divisors (74923322704).

168573472929 is an frugal number, since it uses more digits than its factorization.

168573472929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273724 (or 136862 counting only the distinct ones).

The product of its digits is 45722880, while the sum is 63.

The spelling of 168573472929 in words is "one hundred sixty-eight billion, five hundred seventy-three million, four hundred seventy-two thousand, nine hundred twenty-nine".