430149212509 has 4 divisors (see below), whose sum is σ = 432635624316. Its totient is φ = 427662800704.

The previous prime is 430149212453. The next prime is 430149212561. The reversal of 430149212509 is 905212941034.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 350185815225 + 79963397284 = 591765^2 + 282778^2 .

It is a cyclic number.

It is not a de Polignac number, because 430149212509 - 2¹⁷ = 430149081437 is a prime.

It is a super-2 number, since 2×430149212509² (a number of 24 digits) contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (430149212309) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1243205644 + ... + 1243205989.

It is an arithmetic number, because the mean of its divisors is an integer number (108158906079).

Almost surely, 2^430149212509 is an apocalyptic number.

It is an amenable number.

430149212509 is a deficient number, since it is larger than the sum of its proper divisors (2486411807).

430149212509 is a wasteful number, since it uses less digits than its factorization.

430149212509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2486411806.

The product of its (nonzero) digits is 77760, while the sum is 40.

The spelling of 430149212509 in words is "four hundred thirty billion, one hundred forty-nine million, two hundred twelve thousand, five hundred nine".