4642529550409 has 9 divisors (see below), whose sum is σ = 4713001790637. Its totient is φ = 4573095857484.

The previous prime is 4642529550397. The next prime is 4642529550479. The reversal of 4642529550409 is 9040559252464.

It is a happy number.

The square root of 4642529550409 is 2154653.

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

It is not a de Polignac number, because 4642529550409 - 2²⁹ = 4641992679497 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4642529550409.

It is not an unprimeable number, because it can be changed into a prime (4642529550479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 144345672 + ... + 144377830.

Almost surely, 2^{4642529550409} is an apocalyptic number.

4642529550409 is the 2154653-rd square number.

4642529550409 is the 1077327-th centered octagonal number.

It is an amenable number.

4642529550409 is a deficient number, since it is larger than the sum of its proper divisors (70472240228).

4642529550409 is an frugal number, since it uses more digits than its factorization.

4642529550409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64452 (or 32226 counting only the distinct ones).

The product of its (nonzero) digits is 15552000, while the sum is 55.

The spelling of 4642529550409 in words is "four trillion, six hundred forty-two billion, five hundred twenty-nine million, five hundred fifty thousand, four hundred nine".