461432640421 has 4 divisors (see below), whose sum is σ = 467273560000. Its totient is φ = 455591720844.

The previous prime is 461432640359. The next prime is 461432640433. The reversal of 461432640421 is 124046234164.

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 a de Polignac number, because none of the positive numbers 2^k-461432640421 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 (461432640481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2920459671 + ... + 2920459828.

It is an arithmetic number, because the mean of its divisors is an integer number (116818390000).

Almost surely, 2^461432640421 is an apocalyptic number.

It is an amenable number.

461432640421 is a deficient number, since it is larger than the sum of its proper divisors (5840919579).

461432640421 is an equidigital number, since it uses as much as digits as its factorization.

461432640421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5840919578.

The product of its (nonzero) digits is 110592, while the sum is 37.

Adding to 461432640421 its reverse (124046234164), we get a palindrome (585478874585).

The spelling of 461432640421 in words is "four hundred sixty-one billion, four hundred thirty-two million, six hundred forty thousand, four hundred twenty-one".