4312421643 has 16 divisors (see below), whose sum is σ = 5841697536. Its totient is φ = 2829197280.

The previous prime is 4312421629. The next prime is 4312421647. The reversal of 4312421643 is 3461242134.

It is not a de Polignac number, because 4312421643 - 2⁵ = 4312421611 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4312421643.

It is not an unprimeable number, because it can be changed into a prime (4312421647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98005 + ... + 135017.

It is an arithmetic number, because the mean of its divisors is an integer number (365106096).

Almost surely, 2^4312421643 is an apocalyptic number.

4312421643 is a deficient number, since it is larger than the sum of its proper divisors (1529275893).

4312421643 is a wasteful number, since it uses less digits than its factorization.

4312421643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37634.

The product of its digits is 13824, while the sum is 30.

The square root of 4312421643 is about 65669.0310801065. The cubic root of 4312421643 is about 1627.6976594816.

Adding to 4312421643 its reverse (3461242134), we get a palindrome (7773663777).

The spelling of 4312421643 in words is "four billion, three hundred twelve million, four hundred twenty-one thousand, six hundred forty-three".