451144618929 has 27 divisors (see below), whose sum is σ = 660917874123. Its totient is φ = 296546316192.

The previous prime is 451144618891. The next prime is 451144618987. The reversal of 451144618929 is 929816441154.

The square root of 451144618929 is 671673.

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

451144618929 is a `hidden beast` number, since 4 + 5 + 1 + 14 + 4 + 618 + 9 + 2 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 256091663025 + 195052955904 = 506055^2 + 441648^2 .

It is a de Polignac number, because none of the positive numbers 2^k-451144618929 is a prime.

It is not an unprimeable number, because it can be changed into a prime (451144658929) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 147094854 + ... + 147097920.

Almost surely, 2^451144618929 is an apocalyptic number.

451144618929 is the 671673-rd square number.

451144618929 is the 335837-th centered octagonal number.

It is an amenable number.

451144618929 is a deficient number, since it is larger than the sum of its proper divisors (209773255194).

451144618929 is an frugal number, since it uses more digits than its factorization.

451144618929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6286 (or 3143 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 54.

The spelling of 451144618929 in words is "four hundred fifty-one billion, one hundred forty-four million, six hundred eighteen thousand, nine hundred twenty-nine".