Search a number
-
+
430545904861 = 1289933378239
BaseRepresentation
bin1100100001111101000…
…10010010010011011101
31112011022111002010001111
412100332202102103131
524023224222423421
6525442352542021
743051220544142
oct6207642222335
91464274063044
10430545904861
11156658a36876
126b538b51911
13317a5b3b967
1416ba4d123c9
15b2ed406ee1
hex643e8924dd

430545904861 has 4 divisors (see below), whose sum is σ = 430579296000. Its totient is φ = 430512513724.

The previous prime is 430545904829. The next prime is 430545904879. The reversal of 430545904861 is 168409545034.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 430545904861 - 25 = 430545904829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (430545904361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16676221 + ... + 16702018.

It is an arithmetic number, because the mean of its divisors is an integer number (107644824000).

Almost surely, 2430545904861 is an apocalyptic number.

It is an amenable number.

430545904861 is a deficient number, since it is larger than the sum of its proper divisors (33391139).

430545904861 is a wasteful number, since it uses less digits than its factorization.

430545904861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33391138.

The product of its (nonzero) digits is 2073600, while the sum is 49.

The spelling of 430545904861 in words is "four hundred thirty billion, five hundred forty-five million, nine hundred four thousand, eight hundred sixty-one".

Divisors: 1 12899 33378239 430545904861