133543285424649 has 27 divisors (see below), whose sum is σ = 195821276149863. Its totient is φ = 87698542635792.

The previous prime is 133543285424621. The next prime is 133543285424671. The reversal of 133543285424649 is 946424582345331.

It is a happy number.

The square root of 133543285424649 is 11556093.

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

133543285424649 is a `hidden beast` number, since 1 + 3 + 3 + 5 + 4 + 3 + 2 + 8 + 542 + 46 + 49 = 666.

It can be written as a sum of positive squares in only one way, i.e., 54371230479225 + 79172054945424 = 7373685^2 + 8897868^2 .

It is not a de Polignac number, because 133543285424649 - 2⁹ = 133543285424137 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (133543285024649) 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, 2322745947 + ... + 2322803439.

Almost surely, 2^{133543285424649} is an apocalyptic number.

133543285424649 is the 11556093-rd square number.

133543285424649 is the 5778047-th centered octagonal number.

It is an amenable number.

133543285424649 is a deficient number, since it is larger than the sum of its proper divisors (62277990725214).

133543285424649 is an frugal number, since it uses more digits than its factorization.

133543285424649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115126 (or 57563 counting only the distinct ones).

The product of its digits is 298598400, while the sum is 63.

The spelling of 133543285424649 in words is "one hundred thirty-three trillion, five hundred forty-three billion, two hundred eighty-five million, four hundred twenty-four thousand, six hundred forty-nine".